1998 Volume 17 Issue 1-2 Pages 1-2_23-1-2_26
Determination of corneal base curve (vertical and horizontal direction) and vertical meridian axis was carried out with an ophthalmometer (Inami Co. Ltd.), and correlation of body weight and corneal diameter, and corneal base curve was examined in dogs.
Longitudinal and transverse diameters of corneas were measured with a caliper without general anaesthesia after measuring body weights in healthy forty-five dogs. Subsequently corneal base curves were measured under sedation by xylazine and ketamine hydrochloride. Animal body weight was 3-25 kg, and longitudinal diameter was 12.2-16.6 mm, transverse diameter was 13.7-19.7 mm. The corneal base curve (mean±SD) was 8.50±0.46 mm at the vertical direction and 8.61±0.41 mm at the horizontal direction in the right eyes, and 8.47±0.43 mm at the vertical direction and 8.54±0.44 mm at the horizontal direction in the left eyes. Vertical meridian axis inclined to 85.9±8.1 degrees in the right eyes and to 98.2±8.5 degrees in the left eyes. Coefficient of correlation between corneal diameters and body weights was 0.30-0.49. On the other hand, correlation between body weight and corneal base curve was 0.58, but it was suggested corneal base curves depend on body weights in this study.
