Table 1 Corneal densitometry values of the normal and highly myopic groups
Normal Group (n = 100) | HM Group (n = 100) | Difference | P* | |
|---|---|---|---|---|
Anterior 120 μm | ||||
0–2 mm | 21.0 ± 2.7 | 20.6 ± 2.2 | 0.4 ± 0.3 | 0.474 |
2–6 mm | 20.6 ± 3.3 | 19.6 ± 2.9 | 1.1 ± 0.4 | 0.017 |
6–10 mm | 34.2 ± 11.6 | 30.3 ± 13.4 | 3.9 ± 1.8 | 0.004 |
10–12 mm | 41.1 ± 13.5 | 46.4 ± 14.2 | − 5.3 ± 2.0 | 0.004 |
Total 0–12 mm | 27.7 ± 6.1 | 26.7 ± 6.3 | 1.0 ± 0.9 | 0.143 |
Center layer | ||||
0–2 mm | 12.8 ± 1.2 | 12.4 ± 0.9 | 0.4 ± 0.1 | 0.030 |
2–6 mm | 13.0 ± 2.2 | 12.0 ± 1.7 | 1.0 ± 0.3 | < 0.001 |
6–10 mm | 23.0 ± 8.0 | 19.7 ± 8.3 | 3.3 ± 1.2 | 0.001 |
10–12 mm | 24.1 ± 7.1 | 24.1 ± 6.6 | 0 ± 1.0 | 0.823 |
Total 0–12 mm | 17.8 ± 4.2 | 16.2 ± 3.9 | 1.6 ± 0.6 | 0.002 |
Posterior 60 μm | ||||
0–2 mm | 11.7 ± 1.9 | 10.7 ± 1.4 | 1.1 ± 0.2 | < 0.001 |
2–6 mm | 11.9 ± 2.3 | 10.5 ± 1.5 | 1.4 ± 0.3 | < 0.001 |
6–10 mm | 18.9 ± 4.9 | 16.4 ± 5.3 | 2.5 ± 0.7 | < 0.001 |
10–12 mm | 20.9 ± 5.5 | 19.0 ± 5.2 | 1.9 ± 0.8 | 0.009 |
Total 0–12 mm | 15.4 ± 3.0 | 13.6 ± 2.8 | 1.7 ± 0.4 | < 0.001 |
Total corneal thickness | ||||
0–2 mm | 15.2 ± 1.6 | 14.7 ± 1.5 | 0.5 ± 0.2 | 0.028 |
2–6 mm | 15.4 ± 3.9 | 14.1 ± 2.1 | 1.3 ± 0.4 | 0.001 |
6–10 mm | 25.2 ± 8.0 | 22.1 ± 8.8 | 3.1 ± 1.2 | 0.002 |
10–12 mm | 28.7 ± 7.9 | 30.1 ± 8.0 | −1.4 ± 1.1 | 0.203 |
Total 0–12 mm | 20.3 ± 4.3 | 18.9 ± 4.4 | 1.4 ± 0.6 | 0.008 |