Table 2 Clinical assessment of dry eye by ITF severity level
Dry eye assessment | Overall (N = 158) | Dry eye severity level | ||
|---|---|---|---|---|
ITF 1 (n = 52) | ITF 2 (n = 54) | ITF 3/4 (n = 52) | ||
Left eye visual acuity, n (%) | ||||
  < 20/20 | 11 (7) | 4 (8) | 5 (9) | 2 (4) |
 20/20 to < 20/40 | 134 (85) | 46 (88) | 45 (83) | 43 (83) |
 20/40 to 20/60+ | 13 (8) | 2 (4) | 4 (7) | 7 (14) |
Right eye visual acuity, n (%) | ||||
  < 20/20 | 12 (8) | 3 (6) | 6 (11) | 3 (6) |
 20/20 to < 20/40 | 133 (84) | 47 (90) | 45 (83) | 41 (79) |
 20/40 to 20/60+ | 13 (9) | 2 (4) | 3 (6) | 8 (15) |
Central corneal staining, n (%) | 30 (19) | 0†| 1 (2)†| 29 (56) |
Corneal staining, mean (SD) | 1.2 (0.8) | 0.7 (0.5)*,†| 1.2 (0.6)†| 2.3 (0.5) |
Conjunctival staining, mean (SD) | 1.3 (0.8) | 0.8 (0.5)*,†| 1.2 (0.7)†| 2.0 (0.8) |
TBUT, mean (SD), s | 6.2 (4.3) | 8.4 (3.6)*,†| 6.4 (5.3)†| 3.7 (2.0) |
Schirmer’s test type I, mean (SD) | 10.3 (7.0) | 13.6 (7.9)*,†| 10.3 (6.0)†| 7.2 (5.6) |