University of Cambridge Veterinary School
In an experiment involving the use of N-acetylcarnosine in dogs suffering form cataracts, researchers found that its effects are more pronounced in the early form of the disease. Scientists from the Department of Veterinary Medicine, University of Cambridge (UK), wanted to see if a topical antioxidant containing N-acetylcarnosine had any effect on dogs suffering from different stages of cataract. They examined 30 dogs of different breeds and used eye drops containing 2% N-acetylcarnosine. The drops were used three times a day, and the dogs were examined at regular intervals, by using direct and indirect ophthalmoscopy and slitlamp biomicroscopy (a method whereby the examiner looks directly and in detail into the eye). Specialist photographs were then taken. The results showed that improvement of cataract was found in all eyes examined, but this improvement was particularly relevant in cases where the cataract was in the early stages(immature cataract).
Reference: Williams DL, Munday P. Vet Ophthalmol. 2006;9(5):311-6.The effect of a topical antioxidant formulation including N-acetyl carnosine on canine cataract: a preliminary study). Rejuvenation Res. 2004 Fall;7(3):186-98.