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)
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.