Table 4.
Comparison of corneal parameters among various study groups.
| Portuguese | Turkish | Nigerian | Thai | Chinese | Iranian | Indian | |
|---|---|---|---|---|---|---|---|
| No of eyes | 256 | 252 | 359 | 404 | 1329 | 525 | 537 |
| CCT (µm) | 567.5 ± 43.2 | 521 ± 33 | |||||
| CED (cells/mm2) | 2526.4 ± 362.5 | 2671 ± 356 | 2610.2 ± 371.8 | 2623.4 ± 325 | 2932 ± 363 | 1961 ± 457 | 2525 ± 337 |
| CV | 33 ± 3 | 34.3 ± 5.3 | 43.9 ± 9.5 | 39.4 ± 8.2 | 33 ± 5 | 24.1 ± 7.1 | |
| Hexa (%) | 53.8 ± 6.8 | 54.9 ± 10 | 46.5 ± 8.8 | 51.5 ± 10.9 | 59 ± 9 | ||
| Cell loss (cells/mm2) | 145 cells/mm2 per decade or 0.54% per year | 82 cells/mm2 per decade or 0.28% per year | 71 cells/mm2 per decade or 0.24% per year | 84 cells/mm2 per decade or 0.30% per year | 81 cells/mm2 per decade or 0.24% per year | 139 cells/mm2 per decade or 0.57% per year | 75 cells/mm2 per decade or 0.3% per year |