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Dry eye syndrome, also known as keratoconjunctivitis sicca, is the condition of having dry eyes. [2] Symptoms include dryness in the eye, irritation, redness, discharge, blurred vision, and easily fatigued eyes. Symptoms range from mild and occasional to severe and continuous. [3]
Xerophthalmia (from Ancient Greek xērós (ξηρός) meaning "dry" and ophthalmos (οφθαλμός) meaning "eye") is a medical condition in which the eye fails to produce tears. It may be caused by vitamin A deficiency, [ 1 ] which is sometimes used to describe that condition, although there may be other causes.
[12] [13] Besides leading to dry eyes, the obstructions can be degraded by bacterial lipases, resulting in the formation of free fatty acids, which irritate the eyes and sometimes cause punctate keratopathy. Meibomian gland dysfunction is more often seen in women and is regarded as the main cause of dry eye disease.
Suddenly having dry eyes is likely related to an environmental trigger, although an underlying medical condition is also possible. Find answers here.
Dietary antioxidant vitamins, minerals, and carotenoids do not appear to affect the onset; [5] however, dietary supplements may slow the progression in those who already have the disease. [5] Age-related macular degeneration is a main cause of central blindness among the working-aged population worldwide. [6]
Fundus of geographic atrophy. Geographic atrophy (GA), also known as atrophic age-related macular degeneration (AMD) or advanced dry AMD, is an advanced form of age-related macular degeneration that can result in the progressive and irreversible loss of retinal tissue (photoreceptors, retinal pigment epithelium, choriocapillaris) which can lead to a loss of central vision over time.
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