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.
Endophthalmitis, in addition to causing eye pain, causes redness, swollen eyelids and decreased vision. If you have these symptoms after cataract surgery or other eye surgery, see your eye doctor immediately. Pain Behind Your Eye. Common causes of pain behind the eyes are migraine headaches and sinus infections.