Table 1. Characteristics of the study population.
| Patients | High myopia cases | Extreme myopia cases | Control | p |
|---|---|---|---|---|
| n |
421 |
302 |
401 |
|
| Age, y(Mean±SD) |
38.29±16.57 |
41.24±16.34 |
68.77±10.65 |
4.487E-16* |
| |
|
|
|
1.887E-11** |
|
Sex, n(%) | ||||
| Men |
165(39.2) |
116(38.4) |
172(42.9) |
0.281# |
| Women |
256(60.8) |
186(61.6) |
229(57.1) |
0.232## |
|
Axial length, mm | ||||
| Right eye(Mean±SD) |
28.33±2.26 |
28.98±2.27 |
23.13±0.67 |
|
| Left eye (Mean±SD) |
28.35±2.33 |
29.02±2.35 |
23.07±0.68 |
|
|
Refraction, D | ||||
| Right eye(Mean±SD) |
−14.57±5.60 |
−16.54±5.26 |
0.39±0.82 |
|
| Left eye(Mean±SD) | −14.51±5.64 | −16.39±5.47 | 0.42±0.80 | |
*p value between high myopia and control, **p value between extreme myopia and control were both tested by unpaired t-test. #p value between high myopia and control, ##p value between extreme myopia and control were both performed based on the χ2 test.