Dryness: Often eyes dry during sleep. Usually our protective secretions aid the ocular surface from drying out, but sometimes not always effective. Poor sleep, some medications (decongestants, antihistamines), partial eyelid opening (lagophthalmos), room airflow, all may exacerbate dryness and irritation. Try a gel-based artificial tear prior to bedtime to see if symptoms improve.
Answered 11/8/2014
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