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Dry Eye Causes
Dry Eye Causes
Dry eyes are caused by changes in tear production, secretion, or evaporation. These can result from:
- Hormonal changes after menopause, during menstruation or pregnancy
- Conditions that affect the tear-producing gland or its ducts, including autoimmune diseases like lupus, rheumatoid arthritis (RA) and Sjogren's syndrome
- Reduction of feeling on the cornea, from contact lenses, certain medications, diseases like diabetes and shingles (herpes zoster), and corneal surgery, including LASIK (learn more about LASIK)
- Damage to nerves tied to tear production or muscles for blinking
- Chemotherapy
- Exposure to smoke, air conditioning, or a dry, windy climate
People who stare at computers and other electronic screens for long periods can also develop dry eye, since they tend to blink less often. Learn more about eye strain.