A lack of tears is more common in women, especially if they experience hormonal changes due to pregnancy, using birth control pills or menopause. Dry eyes are more common in people over 50. Tear production tends to diminish as you get older. Eyelid problems, such as the lids turning outward (ectropion) and the lids turning inward (entropion)įactors that make it more likely that you'll experience dry eyes include:.Blinking less often, which tends to occur with certain conditions, such as Parkinson's disease or when you're concentrating during certain activities, such as while reading, driving or working at a computer.Posterior blepharitis (meibomian gland dysfunction).Blocked meibomian glands are more common in people with rosacea or other skin disorders.Ĭommon causes of increased tear evaporation include: The oil film produced by small glands on the edge of your eyelids (meibomian glands) might become clogged. Corneal nerve desensitivity caused by contact lens use, nerve damage or laser eye surgery, though symptoms of dry eyes related to this procedure are usually temporary.Certain medicines, including antihistamines, decongestants, hormone replacement therapy, antidepressants, and medicines for high blood pressure, acne, birth control and Parkinson's disease.host disease, sarcoidosis, thyroid disorders or vitamin A deficiency Certain medical conditions including Sjogren's syndrome, allergic eye disease, rheumatoid arthritis, lupus, scleroderma, graft vs.Common causes of decreased tear production include: The medical term for this condition is keratoconjunctivitis sicca (ker-uh-toe-kun-junk-tih-VY-tis SIK-uh). Decreased tear productionĭry eyes can occur when you're unable to produce enough liquid tears, also called aqueous fluid. For some people, the cause of dry eyes is decreased tear production or increased tear evaporation. Reasons for tear film dysfunction are many, including hormone changes, autoimmune disease, inflamed eyelid glands or allergic eye disease. Problems with any of these layers can cause dry eyes. This combination usually keeps the surface of your eyes lubricated, smooth and clear. Your tear film has three layers: fatty oils, aqueous fluid and mucus. Excess fluid drains through the tear ducts into the nose.ĭry eyes are caused by a variety of reasons that disrupt the healthy tear film. The tear glands (lacrimal glands), located above each eyeball, continuously supply tear fluid that's wiped across the surface of your eye each time you blink your eyes.
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