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.
They are caused when pieces of debris floating in the jelly-like substance of the vitreous humor, which fills the middle of an eyeball, cause shadows on the retina at the back of the eye.While rarely a cause for concern, they can be annoying enough for some to want to learn how to reduce floaters.hey are caused when pieces of debris floating in the jelly-like substance of the vitreous humor, which fills the middle of an eyeball, cause shadows on the retina at the back of the eye.