A cataract is the clouding of the eye’s lens. Most cataracts are age-related and develop gradually, but people with Crohn’s disease can develop cataracts as a result of taking oral steroids to treat their Crohn’s disease. This is called secondary cataract. Common symptoms of cataracts are cloudy vision, faded colors, glare, poor night vision, and double vision. In the early stages of cataract, special eyeglasses can improve vision. If that doesn’t work, the cataract may have to be surgically removed.