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.
In some children lazy eye is caused by a combination of strabismus and refractive problems. Deprivation. Any problem with one eye â such as a cloudy area in the lens (cataract) â can deprive a child of clear vision in that eye. Deprivation amblyopia in infancy requires urgent treatment to prevent permanent vision loss.
Strabismus (crossed eyes) is the most common cause of amblyopia. There is often a family history of this condition. The term lazy eye refers to amblyopia, which often occurs along with strabismus. However, amblyopia can occur without strabismus. Also, people can have strabismus without amblyopia.