Table 1.
Patient Characteristics of crosslinked and naïve fellow eyes.
| Patient characteristics | Overall (N = 79) |
CXL fellow eye Group 1 (N = 30) |
Naïve fellow eye Group 2 (N = 49) |
p value |
|---|---|---|---|---|
| Mean age at baseline visit (years) | 24.6 ± 7.9 | 22.0 ± 6.8 | 26.1 ± 8.2 | 0.026 |
| Gender | ||||
| Male | 55 (70%) | 26 (87%) | 29 (59%) | 0.01 |
| Female | 24 (30%) | 4 (13%) | 20 (41%) | |
| Family history of keratoconus | 7 (9%) | 4 (13%) | 3 (6%) | 0.21 |
| Ethnicity | ||||
| Caucasian | 45 (57%) | 20 (67%) | 25 (51%) | 0.46 |
| African American | 16 (20%) | 4 (13%) | 12 (24%) | |
| South Asian | 4 (5%) | 1 (3%) | 3 (6%) | |
| East Asian | 4 (5%) | 1 (3%) | 3 (6%) | |
| Other | 10 (13%) | 4 (13%) | 6 (12%) | |
| Eye characteristics | ||||
| Eye | ||||
| Right | 39 (49%) | 16 (53%) | 23 (47%) | 0.58 |
| Left | 40 (51%) | 14 (47%) | 26 (53%) | |
| Atopic disease | 32 (41%) | 15 (50%) | 17 (35%) | 0.18 |
| Eye rubbing | 36 (46%) | 12 (40%) | 24 (49%) | 1 |
| Median duration (years) of disease from diagnosis | 0.3 [.1, 2.0] | 0.3 [0.1, 2.0] | 0.8 [0.0, 5.0] | 0.65 |
| Contact lens | ||||
| Scleral | 7 (9%) | 1 (3%) | 6 (12%) | 0.52 |
| Rigid gas permeable | 11 (14%) | 4 (13%) | 7 (14%) | |
| Soft | 12 (15%) | 6 (20%) | 6 (12%) | |
| Apical scar | 6 (8%) | 0 (0%) | 6 (12%) | 0.081 |
| Vogt striae | 7 (9%) | 3 (10%) | 4 (8%) | 0.7 |
| Fleischer ring | 13 (16%) | 4 (13%) | 9 (18%) | 0.76 |
| Cone observed clinically | 34 (43%) | 14 (47%) | 20 (41%) | 0.63 |
Values are presented as mean ± SD, median [interquartile range] or as frequency (percentage).