| Sex/Age | Refractive Error | P-Value | Odds Ratio |
| Male | 243 | 0.004 | 0.851 |
| Female | 380 |
| 1.126 |
| Age |
| 0.000 |
|
|
| Glaucoma |
|
|
| Male | 247 | 0.000 | 1.306 |
| Female | 217 |
| 0.789 |
| Age |
| 0.000 |
|
|
| Presbyopia |
|
|
| Male | 128 | 0.026 | 0.853 |
| Female | 207 |
| 1.120 |
| Age |
| 0.000 |
|
|
| Cataract |
|
|
| Male | 70 | 0.001 | 1.377 |
| Female | 49 |
| 0.719 |
| Age |
| 0.000 |
|
|
| Allergies |
|
|
| Male | 60 | 0.004 | 0.750 |
| Female | 119 |
| 1.202 |
| Age |
| 0.000 |
|
|
| Diabetic Retinopathy |
|
|
| Male | 8 | 0.052 | 1.67 |
| Female | 3 |
| 0.48 |
| Age |
| 0.000 |
|