Factors influencing visual acuity
| Factor | Coefficient (99% CI) | ||
|---|---|---|---|
| 3 months | 12 months | ||
| Baseline | −1.53 (6/28) | −1.40 (6/24) | |
| Recipient age (years) | |||
| 0–9 | −0.14 (−1.04, 0.77) | −0.46 (−1.50, 0.58) | |
| 10–19 | 0.43 (0.03, 0.84) | 0.48 (0.05, 0.93) | |
| 20–29 | 0.44 (0.14, 0.74) | 0.32 (−0.02, 0.66) | |
| 30–39 | 0.41 (0.13, 0.70) | 0.43 (0.11, 0.76) | |
| 40–49 | 0.27 (−0.01, 0.55) | 0.38 (0.06, 0.70) | |
| 50–59 | 0.28 (0.02, 0.54) | 0.37 (0.07, 0.67) | |
| 60–69 | 0.09 (−0.13, 0.70) | 0.28 (0.03, 0.52) | |
| 70–79 | 0.08 (−0.12, 0.28) | 0.20 (−0.02, 0.43) | |
| 80+ | 0.00 | 0.00 | |
| Previous grafts | |||
| None | 0.00 | 0.00 | |
| One | −0.12 (−0.31,0.08) | −0.21 (−0.43, 0.01) | |
| Two | −0.61 (−0.96, −0.27) | −0.50 (−0.93, −0.07) | |
| More | −0.69 (−1.16, −0.21) | −0.49 (−1.00, 0.02) | |
| Reasons for graft | |||
| Cosmetic | |||
| No | 0.00 | 0.00 | |
| Yes | −0.27 (−0.50, −0.04) | −0.13 (−0.39, 0.12) | |
| Diagnosis | |||
| Keratoconus | 0.00 | 0.00 | |
| Primary EF | −0.16 (−0.45, 0.12) | −0.09 (−0.41, 0.23) | |
| Secondary EF | −0.68 (−0.96, −0.40) | −0.63 (−0.95, −0.31) | |
| HSK | −0.26 (−0.53, 0.01) | −0.37 (−0.68, −0.07) | |
| Other inflammation | −0.35 (−0.62, −0.08) | −0.43 (−0.74, −0.13) | |
| Stromal dystrophy | −0.05 (−0.38, 0.27) | 0.03 (−0.34, 0.41) | |
| Trauma | −0.56 (−0.91, −0.21) | −0.89 (−1.28, −0.50) | |
| Others | −0.69 (−0.99, −0.38) | −0.92 (−1.27, −0.58) | |
| Glaucoma | |||
| No | 0.00 | 0.00 | |
| Yes | −0.41 (−0.60, −0.22) | −0.63 (−0.85, −0.41) | |
| Other eye diseases | |||
| No | 0.00 | 0.00 | |
| Yes | −0.26 (−0.51, −0.01) | −0.14 (−0.42, 0.14) | |
| Preoperative VA | |||
| <6/60 | 0.00 | 0.00 | |
| <6/24 | 0.34 (0.19, 0.49) | 0.41 (0.24, 0.58) | |
| ⩾6/24 | 0.41 (0.22, 0.59) | 0.47 (0.27, 0.67) | |
| Unrecorded | 0.23 (−0.29, 0.76) | 0.08 (−0.63, 0.79) | |
| Graft size | |||
| Sum | |||
| ⩽14.5 mm | 0.00 | 0.00 | |
| ⩽15.5 mm | 0.16 (0.02, 0.30) | 0.08 (−0.08, 0.24) | |
| >15.5 mm | 0.14 (−0.02, 0.30) | 0.19 (0.01, 0.37) | |
| Difference | |||
| = 0 mm | 0.00 | 0.00 | |
| ⩽0.25 mm | 0.07 (−0.10, 0.23) | 0.16 (−0.03, 0.34) | |
| >0.25 mm | 0.02 (−0.12, 0.16) | 0.11 (−0.05, 0.27) | |
| Vitreous surgery | |||
| No | 0.00 | 0.00 | |
| Yes | −0.28 (−0.47, −0.09) | −0.07 (−0.30, 0.15) | |
EF = endothelial failure; HSK = herpes simplex keratitis.