Can cataracts turn brown eyes blue in humans?

Cataracts cannot turn brown eyes blue in humans.

Cataracts are a clouding of the lens of the eye that typically appears as a white or gray film over the pupil. They can cause blurry vision, glare, halos around lights, and other visual disturbances. In some cases, cataracts can also cause changes in the color of the eye, making them appear more yellow or brown. However, cataracts do not have the ability to turn brown eyes blue.