Typical symptoms of<unk>  are<unk> ness, burning and a sandy-gritty eye irritation that gets worse as the day goes on. Symptoms may also be<unk> cribed as itchy, stinging or tired eyes. Other symptoms are pain, redness, a pulling sensation, and pressure behind the eye. There may be a feeling that something, such as a speck of dirt, is in the eye. The resultant damage to the eye's surface increases discomfort and sensitivity to bright light. Both eyes usually are affected. There may also be a stringy discharge from the eyes. Although it may seem contradictory,<unk>  eye can cause the eyes to water due to irritation. One may experience excessive tearing such as if something got into the eye. These reflex tears will not necessarily make the eyes feel better since they are the watery tears that are produced in response to injury, irritation, or emotion which lack the lubricating qualities necessary to prevent<unk>  eye. Because blinking coats the eye with tears, symptoms are worsened by activities in which the rate of blinking is reduced due to prolonged use of the eyes. These activities include prolonged reading, computer usage (computer vision syndrome), driving, or watching television. Symptoms increase in windy, dusty or smoky (including cigarette smoke) areas, in<unk>  environments high altitudes including airplanes, on days with low humidity, and in areas where an air conditioner (especially in a car), fan, heater, or even a hair<unk> er is being used. Symptoms reduce during cool, rainy, or foggy weather and in humid places, such as in the shower. Most people who have<unk>  eyes experience mild irritation with no long-term effects. However, if the condition is left untreated or becomes severe, it can produce complications that can cause eye damage, resulting in impaired vision or (rarely) in the loss of vision. Symptom assessment is a key component of<unk>  eye diagnosis – to the extent that many believe<unk>  to be a symptom-based disease. Several questionnaires have been developed to determine a score that would allow for a diagnosis. The McMonnies & Ho<unk>  eye questionnaire is often used in clinical studies of<unk>  eyes.
Dry eye syndrome
Cat eye syndrome
Ocular ischemic syndrome
Phacolytic glaucoma
Motion-induced blindness
Iridocorneal endothelial syndrome
Ghost cell glaucoma
Infiltrative ophthalmopathy