Impact of phakic intraocular lens implantation on anxiety and depression in patients with high myopia

Table 1 Clinical characteristics

Variable	mean ± SD
Age (year)	28.02 ± 5.72
Sphere (diopters)	-9.52 ± 2.76
Cylinder (diopters)	-1.57 ± 0.63
Axis (degrees)	124.42 ± 72.13
Axial length (mm)	27.25 ± 1.16
Corneal thickness (μm)	540.37 ± 34.28
Corneal endothelium (cells/mm2)	2861.35 ± 217.16
Intraocular pressure (mmHg)	15.36 ± 2.93
Length of wearing spectacle (year)	13.16 ± 5.25
Length of wearing contact lens (year)	3.92 ± 4.26

Table 2 Comparison of visual acuity before and after treatment

Variables	UCVA (log MAR)	BCVA (log MAR)	P value
Before treatment	1.83 ± 0.24	0.04 ± 0.07	< 0.001
After treatment	0.03 ± 0.05	0.01 ± 0.02	0.026

MAR: Minimum angle of resolution; UCVA: Uncorrected visual acuity; BCVA: Best-corrected visual acuity.

Table 3 Comparison of Pittsburgh Sleep Quality Index scores before and after treatment

PSQI	Before treatment	After treatment	P value
Sleep efficiency	2.82 ± 0.33	1.16 ± 0.52	< 0.001
Sleep quality	2.77 ± 0.46	0.92 ± 0.45
Sleep disorder	2.78 ± 0.37	0.87 ± 0.43
Sleep time	2.89 ± 0.32	1.29 ± 0.58
hypnotic	2.36 ± 0.48	0.87 ± 0.32
Sleep time	2.64 ± 0.41	0.95 ± 0.35
Daytime dysfunction	2.49 ± 0.38	0.71 ± 0.37
Total sores	18.89 ± 0.68	7.32 ± 0.56

PSQI: Pittsburgh Sleep Quality Index.