I have heard that injury's to the eye can cause a change in eye color ,so i was wounding what type of injury could cause iris discoloration and how does the injury actually effect the iris to cause this change in color?
Simple things like a corneal abrasion do not cause an iris color change. The most common reason for a change in iris color is corneal clouding. The cornea can become hazy due to fluid build-up, scarring, or blood-staining after injury or disease. In such cases, the underlying iris appears to be of a different color, but this is due to the overlying corneal haze.
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