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Diseases of the Lens

The lens of the eye is also subject to disease. Cataracts are usually inherited, surprisingly, inherited cataracts usually occur in your animals, although some dogs suffer from late-onset inherited cataracts. Another common cause of cataracts is sugar diabetes.

Large cataracts can reduce lens functions to the point of blindness, but surgical removal of cataractous lenses has restored sight in many dogs. The vet must check the retina to see if it is functional before deciding whether to surgically remove a cataract. But cataracts block a clear view of the retina and make it challenging for vets to examine the retina with a hand-held ophthalmoscope.

As animals age, the lens may also develop a cloudiness. This can be differentiated from cataracts and may not require surgical intervention. Although aging is not a disease, it often brings changes in your dog's vision. In general, older dogs are not as responsive to visual stimuli as younger dogs.

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Eyes Tear Stains, Diseases of the Cornea, Diseases of the Lens, Glaucoma, Dogs Vision