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Understanding Your Eyesight

Dry Eye

The most common signs and symptoms associated with dry eye include itching, burning, blurred vision, pain, conjunctivitis, red eyes and sensitivity to light.

The eye is continually lubricated by tear as it rolls in the eyeball socket. Tears are produced by the lacrimal gland which is located on the outer side of the eye orbit. And with every blink of the eyes, the tears distributed on the surface of the eyeball. A film of tear forms around the eye ball and the eyes are lubricated and moistened to enable friction free rolling within the sockets.

The tear film is basically made up of three layers.

The fact that tears protects the eye from infections, it must be continuously discharged. In the presence of an infectious agent like bacteria in the environment, the tears are discharged in large amounts to eliminate the infection. And in case the tears are not effective enough, there is the formation of an inflammation which is characterized by reddening of the eye. The eye basically produces 900 drops of tears every day, which equates to 9.5 ml.

Secretion of tears decreases with age. There is up to 60% loss in the amount of tears secreted as a patient ages although the percentage is lower in men as compared to women. Dry eye syndrome has also been associated with the absence of the oily layer which allows quick evaporation of the tears.

Treatment of the dry eye disorder basically involves the use of artificial tears. However, it is advised that people with such conditions visit an ophthalmologist for proper diagnosis and prescription of the ideal wetting based on the cause of the disease.

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