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Kaymak H, Messerschmidt-Roth A. [Determination of refractive error and visual acuity after implantation of multifocal or extended depth of focus lenses]. DIE OPHTHALMOLOGIE 2024; 121:930-941. [PMID: 39466392 DOI: 10.1007/s00347-024-02131-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/01/2024] [Indexed: 10/30/2024]
Abstract
There are many factors that can affect the postoperative satisfaction of patients after implantation of intraocular lenses with extended depth of focus (EDoF) and multifocal lenses (e.g., photic phenomena, postoperative complications and the presence of dry eye symptoms); however, achieving the target refraction should also be considered an important factor in the satisfaction. This article highlights the pitfalls in determining the refractive error in patients with a multifocal or EDoF lens and how uncorrected and corrected visual acuity can impact patient satisfaction.
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Affiliation(s)
- Hakan Kaymak
- Gottfried O.H. Naumann-Institut für Epidemiologie und Prävention für Myopie, Universität des Saarlandes, Kirrberger Str. 100, Gebäude 22, 66424, Homburg/Saar, Deutschland.
- Internationale Innovative Ophthalmochirurgie GbR, Düsseldorf, Deutschland.
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Liang J, Yan H, Xie X, Zhang J, Zhang Y, Qu L. Effect of capsular tension ring implantation on intraocular lens calculation formula selection for long axial myopia. BMC Ophthalmol 2024; 24:368. [PMID: 39179954 PMCID: PMC11344288 DOI: 10.1186/s12886-024-03602-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 07/30/2024] [Indexed: 08/26/2024] Open
Abstract
PURPOSE The study investigated the effect of capsular tension ring (CTR) implantation on postoperative refractive stability and accuracy of intraocular lens (IOL) formulas for axial length (AL) ≥ 27.0 mm patients. METHODS Prospective case series. The eyes of patients underwent phacoemulsification extraction combined with IOL implantation were classified as CTR implantation (A-CTR) and without CTR implantation (B-CON) groups. Refractive outcome and anterior chamber depth (ACD) were recorded at 1 week, 1 month, and 3 months post-operation. Prediction refractive error (PE) and absolute refractive error (AE) of each formula were calculated. RESULTS A total of 89 eyes (63 patients) were included and randomized into the CTR (A-CTR) and control groups (B-CON). Comparison of refraction at different postoperative times of the CTR group showed no statistical difference (all P > 0.05). The ACD in the A-CTR group gradually deepened, and that in the B-CON group gradually shallowed (all P > 0.05). The formulas' AE showed statistically significant differences in CTR and CON groups (P < 0.001). The PE of Hill-RBF 2.0 and EVO formulas in the A-CTR group were more hyperopic than that in the B-CON group (all P > 0.05), the other five formulas were more myopic in A-CTR group than that in the B-CON group (all P > 0.05). CONCLUSION Patients with 13 mm diameter CTR implantation tended to have stable refraction at 1 week post-surgery and 1 month for those without it. CTR of the 13 mm diameter had no effect on the selection of formulas. Additionally, it is found that Kane and EVO formulas were more accurate for patients with AL ≥ 27.0 mm.
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Affiliation(s)
- Jiaojiao Liang
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi Province, 710004, China
- Xi'an Children's Hospital, Xi'an, Shaanxi Province, 710003, China
| | - Hong Yan
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi Province, 710004, China.
| | - Xue Xie
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi Province, 710004, China
- Xi'an Children's Hospital, Xi'an, Shaanxi Province, 710003, China
| | - Jian Zhang
- Department of Ophthalmology, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi Province, 710068, China
| | - Yaping Zhang
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi Province, 710004, China
| | - Laiqiang Qu
- Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital of Northwest University, Xi'an, Shaanxi Province, 710004, China
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Nanda AK, Panda BB, Swain A, Balakrishnan L. Determination of the time of refractive stability after uneventful phacoemulsification in Indian eyes. World J Exp Med 2024; 14:95016. [PMID: 38948423 PMCID: PMC11212749 DOI: 10.5493/wjem.v14.i2.95016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/05/2024] [Accepted: 05/30/2024] [Indexed: 06/19/2024] Open
Abstract
BACKGROUND Knowledge about refractive stabilization and the accuracy of postoperative refractive error measurements are crucial for improved patient outcomes after phacoemulsification. Existing guidelines typically recommend waiting 4-6 wk before prescribing corrective lenses. Our research focused on identifying factors that influence refractive errors in the early stages of post-cataract surgery, thus contributing to the existing literature on this topic. AIM To investigate the time required for refraction stability after uneventful phacoemulsification surgery. METHODS We compared the variation and statistical significance of the difference in spherical, cylindrical components, and the spherical equivalent between the 1- and 6-wk follow-up period in a group of 257 eyes that underwent uneventful phacoemulsification with foldable intraocular lens implantation, all performed by a single experienced surgeon. The Wilcoxon-Signed Rank Test was utilized to assess the magnitude of the change and determine its statistical significance. The refractive stability was defined as the point at which the change in spherical equivalent was within ± 0.5 dioptres for two consecutive visits. RESULTS The average age of the patients was 64.9 ± 8.9 yr. The differences observed in both the visits in spherical power (0.1 ± 0.2), cylinder power (0.3 ± 0.4), and spherical equivalent (0.2 ± 0.2) were minimal and not statistically significant. The majority of eyes (93.4%) achieved refractive stability within 6 wk after the surgery. The cylindrical power differed between age groups at the 6th wk post-operative and the difference was statistically significant (P value 0.013). There were no significant differences in refractive stability when considering sex and axial length. CONCLUSION Phacoemulsification with foldable intraocular lens implantation results in no significant changes in refraction for the majority of cases during the 6-wk follow-up period. Therefore, a spectacle prescription can be given at the completion of 1 wk.
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Affiliation(s)
- Ashok Kumar Nanda
- Department of Ophthalmology, Kar Vision Eye Hospital, Bhubaneswar 751013, Odisha, India
| | - Bijnya Birajita Panda
- Department of Ophthalmology, All India Institute of Medical Sciences, Bhubaneswar 751019, Odisha, India
| | - Asish Swain
- Department of Optometry, Kar Vision Eye Hospital, Bhubaneswar 751013, Odisha, India
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Feng R, Wang M, Tao S, Liang F, Liu X, He C, Fan S. Refractive stability and timing of spectacle prescription following cataract surgery in myopic eyes. Ophthalmic Physiol Opt 2024; 44:576-583. [PMID: 38351864 DOI: 10.1111/opo.13285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 04/08/2024]
Abstract
PURPOSE To investigate the post-operative refractive stabilisation time and provide evidence for the optimal timing of a spectacle prescription in myopic post-cataract surgery patients. METHODS A total of 116 consecutive myopic cataract patients were recruited from the Zhongshan Ophthalmic Center in this prospective study. Post-operative subjective refraction was assessed after 1 week and 1 month (4-6 weeks), with the interval for the new spectacle acquisition being recorded. Visual Function Index-14 (VF-14) questionnaires were used to assess the vision-related quality of life. RESULTS There was no significant difference in spherical (p = 0.33), cylindrical (p = 0.65) or spherical equivalent refractions (p = 0.45) obtained 1 week and 1 month post-operatively, indicating that subjects achieved refractive stability within 1 week. In subgroups having differing age and axial lengths, there were also no significant differences between the 1 week and 1 month findings. The spherical equivalent refractive shift between 1 week and 1 month was significantly correlated with the post-operative prediction error (R = 0.35; p < 0.001). Only five (4.3%) out of 116 patients obtained new spectacles 1 week post-surgery. The VF-14 values improved from 85.77 ± 7.24 to 90.45 ± 5.39 after acquiring new spectacles (p < 0.01). CONCLUSIONS The stabilisation of subjective refraction occurred within 1 week in myopic cataract patients. Shortening the interval before prescribing a new spectacle prescription is recommended for myopic patients following cataract surgery to improve their vision-related quality of life.
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Affiliation(s)
- Rui Feng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
- Department of Ophthalmology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Mingwei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
| | - Shuya Tao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
| | - Feiyan Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
| | - Xialin Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
| | - Chang He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
| | - Shuxin Fan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Sun Yat-sen University, Guangzhou, China
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Lim H, Jang JH, Nam S, Lee K, Kim JY, Tchah H, Lee H. Refractive Predictability between Standard and Total Keratometry during the Femtosecond Laser-Assisted Cataract Surgery with Monofocal Intraocular Lens with Enhanced Intermediate Function. KOREAN JOURNAL OF OPHTHALMOLOGY 2024; 38:9-16. [PMID: 38110185 PMCID: PMC10869425 DOI: 10.3341/kjo.2023.0039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 11/14/2023] [Accepted: 11/19/2023] [Indexed: 12/20/2023] Open
Abstract
PURPOSE We aimed to compare the accuracy of the intraocular lens (IOL) calculation formula using the standard keratometry (K) and total K (TK) during the femtosecond laser-assisted cataract surgery (FLACS) with a monofocal IOL with enhanced intermediate function using currently used formulas. METHODS A retrospective review of 125 eyes from 125 patients who had undergone FLACS with implantation of monofocal IOL with enhanced intermediate function was conducted. The predicted refractive power was calculated using an optical biometer (IOLmaster 700) according to the K and TK in the Barrett Universal II, SRK/T, Haigis, and Holladay 2 formulas. Absolute prediction error (APE) obtained from the actual postoperative refractive outcomes and the refractive error predicted in each formula was compared one month after surgery. RESULTS Mean APE ranged between 0.29 and 0.39 diopters (D) regardless of the calculation formula and the method of measuring corneal curvature. Significant differences were observed in the APE from the four formulas and the two keratometric measurements (p = 0.014). In a total of 125 eyes from 125 patients, the mean APE was lowest with the Barrett Universal II formula. Across all formulas, both the mean APE and the median APE tended to be lower for K than for TK, although there was no significant difference. Approximately 70% to 80% of the patients were included within 0.5 D of the refractive error across all formulas. The percentage of eyes within 0.5 D of APE outcomes was not statistically different between the K and TK data when using each formula. CONCLUSIONS Keratometric measurements considering the poster corneal curvature did not show any additional advantages when implanting the monofocal IOL with enhanced intermediate function during the FLACS.
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Affiliation(s)
- Hyunah Lim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Joon Hyuck Jang
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sanghyu Nam
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Koeun Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Yong Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hungwon Tchah
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hun Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Cicinelli MV, Buchan JC, Nicholson M, Varadaraj V, Khanna RC. Cataracts. Lancet 2023; 401:377-389. [PMID: 36565712 DOI: 10.1016/s0140-6736(22)01839-6] [Citation(s) in RCA: 93] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 08/03/2022] [Accepted: 09/15/2022] [Indexed: 12/24/2022]
Abstract
94 million people are blind or visually impaired globally, and cataract is the most common cause of blindness worldwide. However, most cases of blindness are avoidable. Cataract is associated with decreased quality of life and reduced life expectancy. Most cases of cataract occur after birth and share ageing and oxidative stress as primary causes, although several non-modifiable and modifiable risk factors can accelerate cataract formation. In most patients, phacoemulsification with intraocular lens implantation is the preferred treatment and is highly cost-effective. There has been an increase in the use of comprehensive cataract surgical services, including diagnoses, treatment referrals, and rehabilitation. However, global inequity in surgical service quality is still a limitation. Implementation of preoperative risk assessment, risk reduction strategies, and new surgical technologies have made cataract surgery possible at an earlier stage of cataract severity with the expectation of good refractive outcomes. The main challenge is making the service that is currently available to some patients accessible to all by use of universal health coverage.
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Affiliation(s)
- Maria Vittoria Cicinelli
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - John C Buchan
- International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London, UK
| | - Maneck Nicholson
- Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, India
| | | | - Rohit C Khanna
- Allen Foster Community Eye Health Research Centre, Gullapalli Pratibha Rao International Centre for Advancement of Rural Eye Care, Hyderabad, India; Brien Holden Eye Research Centre, L V Prasad Eye Institute, Hyderabad, India; School of Optometry and Vision Science, University of New South Wales, Sydney, NSW, Australia; School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA.
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Mihalics S, Stattin M, Graf A, Kickinger S, Angermann R, Krepler K, Ansari-Shahrezaei S. Evaluation der postoperativen axialen Linsenposition und Refraktion einer hydrophoben einteiligen Intraokularlinse. SPEKTRUM DER AUGENHEILKUNDE 2023. [DOI: 10.1007/s00717-022-00535-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Mrugacz M, Olszewski M, Pony-Uram M, Brymerski J, Bryl A. Assessment of the Refractive Error and Stabilisation of Refraction after Cataract Surgery in Relation to the Length of the Eyeball. J Clin Med 2022; 11:jcm11185447. [PMID: 36143091 PMCID: PMC9506347 DOI: 10.3390/jcm11185447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/06/2022] [Accepted: 09/13/2022] [Indexed: 11/20/2022] Open
Abstract
The aim of this study was to analyse the changes in refraction, depending on the length of the eyeball, in patients who had undergone cataract surgery using the phacoemulsification method and to assess the stability of refraction. A total of 90 patients (46 to 85 years of age) took part in the study and were divided into three groups: emmetropic, hypermetropic, and myopic. Two types of intraocular lenses were used: Bausch (Akreos AO) and Rayner (C-flex). In conclusion, stabilization of refraction was achieved in the third week in 91% of the emmetropic, 77% of the myopic, and 46% of the hypermetropic patients, respectively. The correct postoperative refraction was achieved using optical biometry and the Barrett Universal II formula to calculate the power of the lens implant.
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Affiliation(s)
- Małgorzata Mrugacz
- Department of Ophthalmology and Eye Rehabilitation, Medical University of Bialystok, Waszyngtona 17, 15-274 Bialystok, Poland
| | - Mateusz Olszewski
- Department of Ophthalmology, Subcarpathian Hospital in Krosno, Korczynska 57, 38-400 Krosno, Poland
| | - Magdalena Pony-Uram
- Department of Ophthalmology, Subcarpathian Hospital in Krosno, Korczynska 57, 38-400 Krosno, Poland
- Correspondence:
| | - Jacek Brymerski
- Department of Ophthalmology, Subcarpathian Hospital in Krosno, Korczynska 57, 38-400 Krosno, Poland
| | - Anna Bryl
- Department of Ophthalmology and Eye Rehabilitation, Medical University of Bialystok, Waszyngtona 17, 15-274 Bialystok, Poland
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Seth I, Bulloch G, Tan A, Thornell E, Agarwal S. Incidence of Pseudophakic Cystoid Macular Oedema Post-Cataract Surgery in Illawarra Shoalhaven Local Health District, Australia. Biomed Hub 2022; 7:1-10. [PMID: 35223872 PMCID: PMC8832185 DOI: 10.1159/000521053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/15/2021] [Indexed: 09/09/2023] Open
Abstract
BACKGROUND Post-operatively, cataract surgery is associated with pseudophakic cystoid macular oedema (PCMO) causing vision disturbances. The presence of comorbidities may increase the incidence of PCMO post-cataract surgery. OBJECTIVE This observational study aimed to assess the incidence of PCMO in Australia (Illawarra region) and identify risk factors for developing PCMO. METHODS Retrospective analysis was performed on data from patients who underwent uncomplicated phacoemulsification and intraocular lens implantation between 1st March and June 30, 2016. Demographics, comorbidities, central subfield thickness (CST), visual acuity, and intraocular pressure (IOP) were collected preoperatively, day 1, and weeks 2, 4, and 6 post-operatively. Statistical analysis was performed using SPSS v.27.0 and GraphPad Prism v.9.0. The median and 95% confidence intervals were used to describe data. Logistic regression and χ2 tests were used to describe the associations. We followed the Declaration of Helsinki guidelines. RESULTS Fifty right and 35 left cataract eyes were operated on (58.8% were females; average age 72.8 ± 8.146 years). Total PCMO incidence was 10.6%, and true PCMO incidence (removing PCMO risk factors) was 4.2% at week 6 post-operatively. CST was slightly increased between pre- and post-cataract surgery at week 4 (p = 0.002) and week 6 (p < 0.0001; median = 259 μm, 264 μm, and 263 μm, respectively). IOP was found to be decreased (p < 0.0001) compared to day 1 (median = 17 mm Hg) and week 6 (median = 13 mm Hg). The probability of developing PCMO (odds ratio [OR] = 3) and vitreomacular traction (OR = 2.9) was higher in diabetic patients compared to non-diabetic patients and in patients >65 years old (OR = 1.5). CONCLUSION The true incidence of PCMO was found to be the greatest at 2-4 weeks post-operatively. Patients with diabetes or advanced age (>65 years) are at an elevated risk of developing PCMO after cataract surgery. The treatment regimens for the comorbid populations, especially diabetic patients, remain limited, and future efforts should target pharmaceutical management for these groups.
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Affiliation(s)
- Ishith Seth
- Illawarra Shoalhaven Local Health District, Wollongong Hospital, Wollongong, New South Wales, Australia
| | - Gabriella Bulloch
- Faculty of Science, Medicine and Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Alvin Tan
- Sydney Local Health District, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Erin Thornell
- Wollongong Eye Specialists, Wollongong, New South Wales, Australia
| | - Smita Agarwal
- Wollongong Eye Specialists, Wollongong, New South Wales, Australia
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Khan AM, Waldner DM, Luong M, Sanders E, Crichton ACS, Ford BA. Stabilization of refractive error and associated factors following small incision phacoemulsification cataract surgery. BMC Ophthalmol 2022; 22:13. [PMID: 34991518 PMCID: PMC8734338 DOI: 10.1186/s12886-021-02221-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 12/01/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Accumulating evidence suggests that refractive stabilization occurs rapidly following small incision cataract surgery. Nonetheless, many guidelines still suggest waiting four to 6 weeks before prescribing corrective lenses. This study was undertaken to supplement the existing literature regarding refractive stabilization, and evaluate multiple contributing factors that could dissuade clinicians from confidently correcting refractive error in the early post-operative course following routine cataract surgeries. METHODS Adult patients undergoing phacoemulsification cataract surgery with uncomplicated surgeries and post-surgical courses at the Calgary Ophthalmology Centre (Calgary, Alberta, Canada) were included in this prospective observational case series. Exclusion criteria included known corneal dystrophies, infectious keratitis, complicated surgery or toric/multifocal IOLs. Data was collected at weekly intervals for a total of 6 weeks. Collected data included autorefraction, visual acuity, corneal pachymetry, and effective lens position. RESULTS One hundred six eyes of 104 patients were included in this study. Post-operative sphere, cylinder and spherical equivalent were not significantly different at any post-operative week compared with week six, and 80-86% of patients were within 0.5D of last follow-up spherical equivalent at any week. The secondary outcomes of central corneal thickness, effective lens position and visual acuity did, however, exhibit significant differences between early post-operative weeks and last follow-up values. CONCLUSIONS These data suggest that refractive error can be effectively measured and corrected as early as one-week post-operatively in the majority of patients, though other measures of post-operative stability including central corneal thickness, effective lens position and visual acuity can require up to 4 weeks to stabilize. Thus a conservative and pragmatic approach may be to wait until 4 weeks post-operatively prior to obtaining refractive correction following uncomplicated phacoemulsification cataract surgery.
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Affiliation(s)
- Ammar M Khan
- Division of Ophthalmology, University of Calgary, 49 Richard Way SW, Calgary, AB, T3E 7M8, Canada.
| | - Derek M Waldner
- Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Micah Luong
- Division of Ophthalmology, University of Calgary, 49 Richard Way SW, Calgary, AB, T3E 7M8, Canada
| | - Emi Sanders
- Division of Ophthalmology, University of Calgary, 49 Richard Way SW, Calgary, AB, T3E 7M8, Canada
| | - Andrew C S Crichton
- Division of Ophthalmology, University of Calgary, 49 Richard Way SW, Calgary, AB, T3E 7M8, Canada
| | - Bryce A Ford
- Division of Ophthalmology, University of Calgary, 49 Richard Way SW, Calgary, AB, T3E 7M8, Canada
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Pedersen KB, Jensen HM. Stabilisation of Automated Refraction in the Immediate Time After Uneventful Cataract Surgery. Ophthalmol Ther 2021; 10:659-667. [PMID: 34269995 PMCID: PMC8319256 DOI: 10.1007/s40123-021-00372-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 06/28/2021] [Indexed: 11/25/2022] Open
Abstract
Introduction To determine which day automated refraction stabilised the first week after uneventful cataract surgery. Methods This was a prospective, single-blinded, randomised cohort study of 148 eyes in 148 consecutive patients undergoing uneventful cataract surgery. Automated refraction was measured from days 2 to 7 after surgery and compared to automated refraction measured 6 weeks post-surgery. We compared measurements using a hierarchical mixed-effect model. Results Our adjusted results did not show a statistically significant change in spherical equivalent between the first week after surgery and 6 weeks after surgery (p-values: day 2: 0.914, day 3: 0.922, day 4: 0.168, day 5: 0.211, day 6: 0.457, day 7: 0.621). We measured the spherical error as stable except for day 5, where a statistically significant change of 0.32 dioptre (p = 0.049) was detected. Similarly, the cylindrical error was also stable on all days of measurements except on day 6, where a significant change of 0.28 dioptre (p = 0.034) was detected. Conclusion The adjusted spherical equivalent was stable on days 2–7 after uneventful cataract surgery in our study population. However, as we observed a statistically significant difference in spherical and cylindrical errors on days 5 and 6, respectively, we could not conclude that automated refraction stabilised the first week after uncomplicated cataract surgery. Supplementary Information The online version contains supplementary material available at 10.1007/s40123-021-00372-z.
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Affiliation(s)
- Knud Beier Pedersen
- Eye Department, Aarhus University Hospital, Barthsgade 13 2 tv, 9200 Aarhus N, Denmark
- Eye department of Hospital Sønderjylland, Sønderjylland, Denmark
| | - Henrik Myrvold Jensen
- Eye Department, Aalborg University Hospital, Blegdalsparken 5, 1. tv, 9000 Aalborg, Denmark
- Eye department of Hospital Sønderjylland, Sønderjylland, Denmark
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Lee TE, Yoo C, Kim YY. The effects of peripheral anterior synechiae on refractive outcomes after cataract surgery in eyes with primary angle-closure disease. Medicine (Baltimore) 2021; 100:e24673. [PMID: 33832065 PMCID: PMC8036052 DOI: 10.1097/md.0000000000024673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 01/17/2021] [Indexed: 01/05/2023] Open
Abstract
Objective of the study was to investigate the effects of peripheral anterior synechiae (PAS) on refractive outcomes after cataract surgery in eyes with primary angle-closure disease (PACD).This is a retrospective, cross-sectional study. Seventy eyes of 70 PACD patients who underwent phacoemulsification and intraocular lens implantation. Patients were divided into 2 groups based on the presence of PAS on preoperative gonioscopy. The predictive power of the intraocular lens was calculated by the SRK/T, Hoffer Q, Haigis, and Holladay formulae. The mean absolute error (MAE) and predicted refractive errors were compared between PAS (+) and PAS (-) groups. We also evaluated the refractive errors with regards to the extent of PAS in the subanalyses.The mean MAE was greater in the PAS (+) group with all formulae (0.61-0.70 diopters [D] vs 0.33-0.45 D, all P < .05). The eyes with PAS tended towards myopia (-0.30 D to -0.51 D vs -0.05 D to +0.24 D, all P < .05). However, the MAEs or predicted refractive errors were not different, irrespective of the extent of PAS in the subanalyses (all, P > .05).The presence or absence of PAS may influence the postoperative refractive outcomes in PACD patients.
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Affiliation(s)
- Tae-Eun Lee
- Department of Ophthalmology, Jeonbuk National University Medical School and Hospital, Jeonju
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Chungkwon Yoo
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Yong Yeon Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
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Menon PR, Shekhar M, Sankarananthan R, Agarwal N, Dhanya CA, Wijesinghe HK. Comparative analysis of predictability and accuracy of American Society of Cataract and Refractive Surgery online calculator with Haigis-L formula in post-myopic laser-assisted in-situ keratomileusis refractive surgery eyes. Indian J Ophthalmol 2020; 68:2985-2989. [PMID: 33229682 PMCID: PMC7856948 DOI: 10.4103/ijo.ijo_2494_20] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Purpose: The aim of this study was to compare the predictability and accuracy of the American Society of Cataract and Refractive Surgery (ASCRS) online calculator with the Haigis-L formula for intraocular lens (IOL) power calculation in post myopic laser-assisted in-situ keratomileuses (LASIK) eyes undergoing cataract surgery and also to analyze the postoperative refractive outcome among the ASCRS average, maximum and minimum values. Methods: A retrospective study was conducted on post myopic LASIK eyes which underwent cataract surgery between June 2017 and December 2019. IOL power was calculated using both Haigis-L & ASCRS methods. Implanted IOL power was based on the ASCRS method. The expected postoperative refraction for IOL power based on the Haigis-L formula was calculated and compared with the Spherical Equivalent (SE) obtained from the patient's actual refraction. Prediction error (PE) & Mean Absolute Error (MAE) was calculated. Intragroup analysis of ASCRS values was done. Results: Among the 41 eyes analyzed, pre-operative and post-operative mean best-corrected visual acuity was 0.58 ± 0.21 and 0.15 ± 0.26 logMAR, respectively. In the ASCRS method, 36 (87.8%) and 40 (97.6%) eyes had PE within ± 0.5D and ± 1.0 D, respectively, whereas, in the Haigis-L method, 29 (70.7%) eyes, and 38 (92.7%) eyes had PE within ± 0.5D and ± 1.0 D, respectively. Among the ASCRS subgroups, ASCRS average, maximum and minimum values had 83%, 80.6%, and 48.8% eyes with SE within ± 0.5D, respectively. Conclusion: ASCRS method can be considered as an equally efficient method of IOL power calculation as the Haigis-L method in eyes which have undergone post myopic LASIK refractive surgery. ASCRS maximum & average values gave better emmetropic results.
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Affiliation(s)
- P Ramya Menon
- Department of Cataract and IOL Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - Madhu Shekhar
- Department of Cataract and IOL Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - R Sankarananthan
- Department of Cataract and IOL Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - Neha Agarwal
- Department of Cataract and IOL Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India
| | - C A Dhanya
- Department of Cataract and IOL Services, Aravind Eye Hospital, Madurai, Tamil Nadu, India
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Charlesworth E, Alderson AJ, de Juan V, Elliott DB. When is refraction stable following routine cataract surgery? A systematic review and meta-analysis. Ophthalmic Physiol Opt 2020; 40:531-539. [PMID: 32696501 DOI: 10.1111/opo.12719] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 01/07/2023]
Abstract
PURPOSE We systematically reviewed the literature to investigate when refraction is stable following routine cataract surgery implanting monofocal intraocular lenses. Current advice recommends obtaining new spectacles 4-6 weeks following surgery. Due to advancements in surgical techniques, we hypothesised that refractive stability would be achieved earlier, which could have major short-term improvements in quality of life for patients. METHODS Medline, CINAHL, AMED, Embase, Web of Science and the Cochrane Library were searched with key words chosen to find articles, which assessed refraction following uncomplicated cataract surgery. Citation chains and the reference lists of all included papers were searched. Unpublished literature was identified using OpenGrey (www.opengrey.eu). The review considered studies that measured refraction at regular intervals following surgery until stability was achieved. RESULTS The search identified 6,680 papers. Two reviewers independently screened the abstracts and nine papers were found to fit the criteria, of which five were included in the meta-analysis. The quality of the papers was evaluated using the Methodological Index for Non-Randomised Studies (MINORS) instrument. Meta-analysis of 301 patients' data of spherical, cylindrical and spherical equivalent correction were performed using Review Manager 5 (RevMan 5.3) (https://revman.cochrane.org/). Refraction at 1-week versus the gold standard of 4-weeks showed no significant difference for sphere data (effect size and 95% confidence interval of; ES = 0.00, 95% CI: -0.17, 0.17; p = 1.00), cylindrical data (ES = +0.06; 95% CI: -0.05, 0.17; p = 0.31), and spherical equivalent (ES = -0.01; 95% CI: -0.12, 0.10; p = 0.90). Heterogeneity was non-significant (I2 < 25%) for all refractive elements. Data were similar for 2- versus 4-weeks post-surgery. Acquired data from one study highlighted a small number of patients with very unstable cylindrical corrections at 1-week post-operatively. CONCLUSIONS No statistical difference was found when comparing sphere, cylindrical and spherical equivalent values at 1- and 4-weeks post cataract surgery. This suggests that new glasses could be provided 1-week after surgery. However, from a clinical perspective, a small number of patients (~7%) from an acquired dataset (N = 72) showed very unstable cylindrical corrections at 1-week. Further work is needed to determine why this is the case and how these patients can be detected.
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Affiliation(s)
- Emily Charlesworth
- Bradford School of Optometry and Vision Science, University of Bradford, Bradford, UK
| | - Alison J Alderson
- Bradford School of Optometry and Vision Science, University of Bradford, Bradford, UK
| | - Victoria de Juan
- Ophthalmology Service, University Hospital Ramón y Cajal, School of Medicine and Health Science, University of Alcalá (IRYCIS), Madrid, Spain
| | - David B Elliott
- Bradford School of Optometry and Vision Science, University of Bradford, Bradford, UK
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