Dry eye occurs when there is insufficient lubrication in the eye, and the conjunctiva becomes much less moist than normal. This causes pain and discomfort in the eyes. It may occur as a result of the following: Any condition that causes corneal scarring, such as erythema multiforme , trachoma , or corneal burns Sjogren's syndrome Lagophthalmos Riley-Day syndrome Absence of lacrimal gland Paralysis of the facial or trigeminal nerves Medication with atropine Deep anesthesia Debilitating diseases There are two kinds of tears: those that lubricate the eye; and those that are produced in response to irritation or emotion. Excessive tears occur when a foreign body irritates the eye or when a person cries. Tears that lubricate the eye are produced around the clock, and they have an important everyday function. A film of tears, spread over the eye by a blink, makes the surface of the eye smooth and optically clear. Without the tear film, good vision would not be possible. The tear film consists of thr...
Take prompt action and follow the steps below if you or someone else has an eye-related injury.
SMALL OBJECT ON THE EYE OR EYELID
The eye will often clear itself of tiny objects, like eyelashes and sand, through blinking and tearing. If not, take these steps:
Tell the person not to rub the eye. Wash your hands before examining it.
Examine the eye in a well-lighted area. To find the object, have the person look up and down, then from side to side.
If you can't find the object, grasp the lower eyelid and gently pull down on it to look under the lower eyelid. To look under the upper lid, you can place a cotton-tipped swab on the outside of the upper lid and gently flip the lid over the cotton swab.
If the object is on an eyelid, try to gently flush it out with water. If that does not work, try touching a second cotton-tipped swab to the object to remove it.
If the object is on the eye, try gently rinsing the eye with water. It may help to use ...
Alternative Names Back and forth eye movements; Involuntary eye movements; Rapid eye movements from side to side; Uncontrolled eye movements; Eye movements - uncontrollable Home Care There is no therapy for most cases of congenital nystagmus. Availability of treatment for acquired nystagmus will vary with the cause. In most cases, except for those caused by Dilantin or alcohol intoxication, nystagmus is irreversible. Call your health care provider if Call your health care provider if nystagmus is detected or suspected. What to expect at your health care provider's office Nystagmus may be observed through the following procedure: If the affected person spins around for about 30 seconds, stops, and tries to stare at an object, the eyes will first move slowly in one direction, then move rapidly in the opposite direction. If you have nystagmus due to a medical condition, these eye movements depend on the underyling cause. Your health care provider will take a careful history and perform a thoroug...
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