Pretty much all animals can get cataracts, but it progresses slowly. A cataract is defined as an opacity of the lens of an eye, meaning there are different types of cataracts (just like in humans). It can be caused by nutritional imbalances, genetics, parasitic infections, poor water conditions or just old age.
I agree with Vivian that this type of cloudy eye is probably not a true cataract like we think about when we think of us getting cataracts, a permanent cell build up on the lens of the eye, which requires surgery after a certain point. The opacity you are seeing is probably due to poor water conditions, or a possible bacterial infection. Do as Vivian says and keep his water warm and clean and see if that helps clear his eyes up.
Last edited by Wallawoo; Today at 12:26 PM.