Q. My 17 1/2 year old cat has a cloudy spot/ odd-looking area on the lens of one eye. She seems to be able to see, but at her age, I'm not sure how well.

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A. This may be an age related hardening of the lens or a cataract developing. Some cataracts can be related to high blood sugar levels and diabetes but many do not have identifiable underlying medical causes. If there is any change in thirst, appetite or body weight I recommend a urine or blood sample to investigate this but otherwise if there is no discomfort (squinting/hiding from light etc) she will adapt well to reduced vision

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