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)
There are a number of causes associated with amblyopia, or lazy eye. In fact, almost any vision development condition can cause it. Common causes include strabismus, or imbalanced eye position. You'll notice strabismus if the eyes cross or if both eyes turn outward. Someone may also develop amblyopia if one eye is more farsighted or nearsighted than its counterpart.