Eyes Moving Fast Cat. If the cat eyes are narrow and the eyes are squinted, that’s a sign of aggression. However, cataracts typically aren't visible until they're advanced enough to significantly impair vision, in which case your cat may show signs of vision loss, such as bumping into objects or moving slowly, especially in dim lighting.
Cats depend more on contrast and degrees of brightness than dogs, due to the differences in the retinal cones. My cat was fine when we left. A clear discharge without redness and pain indicates a problem in the tear drainage system.