Table 4.
Determinants of Severe Visual Impairment (SVI) After Managing Neurotrophic Keratitis (NK)
| Variables | Eyes Without SVI at Last Follow-Up (N = 21) N (%) |
Eyes With SVI at the Last Follow-up (N = 73) N (%) |
Validity |
|---|---|---|---|
| Age (years) | |||
| Median | 38 | 53 | Z = −0.899 |
| IQR | 21 - 56 | 10 - 72 | Wilcoxon P = 0.369 |
| Gender | |||
| Male | 15 (71.4) | 49 (67.1) | RR = 1.1, 95% CI 0.78; 1.46, P = 0.7 |
| Female | 6 (28.6) | 24 (32.9) | |
| Laterality | |||
| Unilateral | 15 (71.4) | 51 (69.9) | RR = 1.0, 95% CI 0.75; 1.4, P = 0.9 |
| Bilateral | 6 (28.6) | 22 (30.1) | |
| Diabetes | |||
| Present | 3 (14.3) | 21 (28.8) | RR = 0.5, 95% CI 0.2; 1.5, P = 0.19 |
| Absent | 18 (85.7) | 52 (71.2) | |
| Stage | |||
| 1 | 2 (9.5) | 4 (5.5) | Chi-square = 4.8 |
| 2 | 18 (85.7) | 51 (69.9) | Degree of freedom (DF) = 2, P = 0.03 |
| 3 | 1 (4.8) | 18 (24.6) |