Table 1. Keratometric values for both eyes in 73 cats.
| Eye | Mean ± SD | Median (minimum, maximum) | ||||
|---|---|---|---|---|---|---|
| Right | Left | Combined | Right | Left | Combined | |
| R1 (mm) | 8.94 ± 0.54 | 8.97 ± 0.52 | 8.95 ± 0.53 | 8.95 (6.82, 10.17) | 9.00 (7.20, 10.31) | 8.98 (6.82, 10.31) |
| R2 (mm) | 8.66 ± 0.48 | 8.69 ± 0.44 | 8.68 ± 0.46 | 8.73 (6.72, 9.43) | 8.74 (6.93, 9.57) | 8.74 (6.72, 9.57) |
| R1R2avg (mm) | 8.80 ± 0.50 | 8.83 ± 0.47 | 8.82 ± 0.49 | 8.83 (6.77, 9.70) | 8.86 (7.07, 9.78) | 8.85 (6.77, 9.78) |
| |Δ (R1−R2)| (D) | 1.19 ± 0.85 | 1.14 ± 0.82 | 1.16 ± 0.83 | 1.00 (0.00, 4.75) | 1.00 (0.00, 4.25) | 1.00 (0.00, 4.75) |
R1=radius of the minor corneal meridian; R2 =radius of the major corneal meridian; R1R2avg=mean of R1 and R2; |Δ (R1−R2)|=absolute difference between R1 and R2 in diopters.