Table 2 Comparison between different stages of keratoconus eyes according to cell surface area
From: Corneal endothelial cells changes in different stages of Keratoconus: a multi-Centre clinical study
Stage 1 (n = 99) | Stage 2 (n = 32) | Stage 3 (n = 19) | |
|---|---|---|---|
Cell surface area (200–300 um2) | |||
Range | 17–42 | 17–31 | 10–24 |
Mean ± S.D | 26.91 ± 7.46 | 21.09 ± 5.27 | 17.37 ± 5.73 |
P value | < 0.001 | ||
P1 | < 0.001 | ||
P2 | < 0.001 | ||
P3 | 0.188 | ||
Cell surface area (300–400 um2) | |||
Range | 1–1.2 | 1–1.2 | 1–1.2 |
Mean ± S.D | 29.04 ± 3.81 | 24 ± 2.3 | 21.47 ± 4.54 |
P value | < 0.001 | ||
P1 | < 0.001 | ||
P2 | < 0.001 | ||
P3 | 0.054 | ||
Cell surface area (400–500 um2) | |||
Range | 12–30 | 11–29 | 19–26 |
Mean ± S.D | 20.62 ± 4.72 | 20.5 ± 5.12 | 24.68 ± 1.6 |
P value | 0.002 | ||
P1 | 1 | ||
P2 | 0.001 | ||
P3 | 0.005 | ||