Fluid intake: how coffee and caffeine affect continence. Caffeine is the most widely consumed behaviour-modifying drug in the world. It occurs naturally in about 60 species of plants, most commonly in coffee beans, tea leaves, cocoa seeds and the cola nut (Thomas, 1990; Greener, 1993).
Clinical features of blepharospasm include involuntary eye closing aggravated by bright lights, wind, pollution, smoke, emotional stress, fatigue. This eye closing may interfere with reading, driving, watching television, and other visual activities, and is rarely associated with retro-orbital. pain. Blepharospasm may be associated with other dystonic disorders, such as oromandibular or. cervical dystonia, and usually occurs in the 5th to 7th decades of life.
7 Causes for Eye Twitching. Fatigue. Another reason for twitching eyes may be a lack of sleep or fatigue resulting from it. Fatigue resulting from physical exertion or inadequate sleep can both cause the eye to twitch. Just as fatigue has the potential to affect other muscles in the body, it can do the same to muscles of the eyelid as well.