Figure 3: Cataract in 20-month-old rat
Case history and photo
Sealpoint Siamese dumbo male, inbred line – DOB – 10/20/02.
Pet rat housed with 2 other males in a Martin’s 695 cage.
Genetic background of rat – Sealpoint Siamese breeding, tracked from grandfather, mother and littermates (approximately 50% cataracts in litter – 4 of 9). Time of onset unknown (photo at 20 months old). Two siblings developed first signs of cataracts at approximately 6 months of age.
Yellow-white eye centers – apparent severe reduction in sight. Appears to be simple dominant gene.
Supportive caging for safety. Maintained on healthy diet. Aggressive treatment deemed not to be a viable option.
Healthy for age.
Photo 1: Side view of eye with cataract.
Photo 2: Enlarged view of eye with cataract.