Table 3.
UCVA | BCVA | BCLCVA | Mean gain line | |
---|---|---|---|---|
All eyes | 0.85 ± 0.38 | 0.47 ± 0.27 | 0.16 ± 0.20 | 3.6 ± 1.8 |
0.30/1.30 | 0.10/1.30 | 0/1.00 | 0/7 | |
Cone types | ||||
Oval (n = 18, 30%) | 0.79 ± 0.30 | 0.43 ± 0.23 | 0.08 ± 0.09 | 4.0 ± 1.7 |
0.30/1.30 | 0.10/1.00 | 0.00/0.20 | 1/7 | |
Nipple (n = 31, 51.67%) | 0.81 ± 0.40 | 0.48 ± 0.31 | 0.14 ± 0.19 | 3.7 ± 1.8 |
0.30/1.30 | 0.10/1.30 | 0.00/1.00 | 0/6 | |
Globus (n = 11, 18.33%) | 1.08 ± 0.36 | 0.49 ± 0.20 | 0.25 ± 0.20 | 2.4 ± 1.6 |
0.30/1.30 | 0.20/0.70 | 0.00/0.70 | 0/5 | |
Cone location | ||||
Central (n = 48, 80%) | 0.85 ± 0.38 | 0.47 ± 0.28 | 0.13 ± 0.18 | 3.8 ± 1.8 |
0.30/1.30 | 0.10/1.30 | 0.00/1.00 | 0/7 | |
Paracentral (n = 12, 20%) | 0.91 ± 0.38 | 0.43 ± 0.24 | 0.17 ± 0.14 | 2.4 ± 1.2 |
0.30/1.30 | 0.10/0.70 | 0.00/0.40 | 1/4 | |
Severity of keratoconus | ||||
Moderate (n = 50, 83.3%) | 0.81 ± 0.36 | 0.44 ± 0.25 | 0.12 ± 0.16 | 3.7 ± 1.8 |
0.30/1.30 | 0.10/1.30 | 0.00/1.00 | 0/7 | |
Advanced (n = 10, 16.7%) | 1.12 ± 0.38 | 0.60 ± 0.32 | 0.26 ± 0.20 | 2.7 ± 1.8 |
0.30/1.30 | 0.20/1.30 | 0.00/0.70 | 0/6 |
UCVA: uncorrected visual acuity, BCVA: best-corrected visual acuity, BCLCVA: best contact lens corrected visual acuity, sd: standard deviation, and D: diopter.