Table 1 Comparison between different stages of keratoconus eyes according to the endothelial cell density and coefficient for variation
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) | |
|---|---|---|---|
Endothelial cell density (ECD) | |||
Range | 2193–3434 | 2143–2971 | 1782–2654 |
Mean ± S.D | 2734.25 ± 284.25 | 2453.25 ± 274.41 | 2344.05 ± 396.14 |
P value | < 0.001 | ||
P1 | < 0.001 | ||
P2 | < 0.001 | ||
P3 | 0.625 | ||
Coefficient of Variation (CV) | |||
Range | 27–83 | 34–56 | 31–44 |
Mean ± S.D | 38.45 ± 12.35 | 44.84 ± 6.02 | 38.32 ± 5.28 |
P value | 0.012 | ||
P1 | 0.011 | ||
P2 | 1 | ||
P3 | 0.106 | ||