Type 2 diabetes complicated by dry eye syndrome: Analysis of dry eye symptoms, corneal neuropathy, and influencing factors

Table 3 Comparison of corneal neuropathy parameters

	Nerve density (μm/mm2)	Main nerve length (μm)	Number of main nerves (pieces)	Main nerve tortuosity (%)
DES group (n = 27)	884.23 ± 25.09	565.41 ± 36.08	2.11 ± 0.42	1.17 ± 0.04
Non-DES group (n = 54)	7944.76 ± 231.55	1388.74 ± 55.89	5.94 ± 1.52	1.11 ± 0.05
t value	157.5	69.53	12.80	5.544
P value	< 0.0001	< 0.0001	< 0.0001	< 0.0001

Independent-sample t-tests for between-group comparisons. DES: Dry eye syndrome.