What is croup? Croup is a fairly common respiratory condition in children usually caused by a viral infection or allergic reaction. Croup affects the windpipe (trachea), the bronchi (airways to the lungs), and the larynx (voice box).
However, as the cataract continues to become denser, vision also becomes more cloudy, and stronger glasses or contact lenses will no longer improve sight. Cataracts typically develop gradually and are usually not painful or associated with any eye redness or other symptoms unless they become extremely advanced.
A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.he most common symptoms of a cataract are: 1  Cloudy or blurry vision. 2  Colors seem faded. 3  Glare. 4  Poor night vision. 5  Double vision or multiple images in one eye. 6  Frequent prescription changes in your eyeglasses or contact lenses. 7  These symptoms also can be a sign of other eye problems.