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.
An eye twitch is an involuntary, abnormal blinking of your eyelid. This abnormal blinking may happen many times per day. If eye twitching is severe, it can impair vision. The orbicularis oculi is a muscle of the face that closes your eyelid.