Chronic pain: Pain (an unpleasant sense of discomfort) that persists or progresses over a long period of time. In contrast to acute pain that arises suddenly in response to a specific injury and is usually treatable, chronic pain persists over time and is often resistant to medical treatments.
Less common conditions that can cause a lazy eye include: 1  an eye disease such as a sore on the transparent layer at the front of the eye (corneal ulcer) or a scar. 2  childhood cataracts â clouding of the lens of the eye that's present from birth. 3  a droopy eyelid (ptosis)
Lazy Eye (Amblyopia) updated July 3, 2015. Lazy eye (medically known as amblyopia) is a unique vision disorder. Its development and progression have more to do with the brainâs ability to process visual information received from both eyes than a defect in the structure of the problem eye itself.