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Dr. Ebtisam Al Alawi  | Kids Eye Care  | Eye Care Myths & facts  |  Why Visit Eye Center  | For Professional Use
Eye Disease | Conjunctivitis
Pink eye, the common name for conjunctivitis, is an inflammation or infection of the conjunctiva, the outer, normally clear covering of the sclera, the white part of the eye. The eye appears pink in conjunctivitis because the blood vessels are dilated. Pink eye is often accompanied by a discharge, but vision is usually normal, and discomfort is mild.
Either a bacterial or a viral infection may cause conjunctivitis. Viruses, which are more common and last several weeks, may cause an upper respiratory infection (or cold) at the same time. Unlike viruses, bacterial conjunctivitis is treated with a variety of antibiotic eye drops or ointments, which usually cure the infection in a day or two.
Conjunctivitis can be very contagious. People who have it should not share towels or pillowcases and should wash their hands frequently. They may need to stay home from school or work and should stay out of swimming pools.
Not everyone with conjunctivitis has an infection. Allergies can cause conjunctivitis too. Typically, people with allergic conjunctivitis have itchy eyes, especially in spring and fall. Eyedrops to control itching are used to treat allergic conjunctivitis. It is important not to use medications that contain steroids (they usually end in "-one" or "-dex") unless prescribed by an ophthalmologist.
Finally, not everyone with pink eye has conjunctivitis. Sometimes more serious diseases, such as infections, damage to the cornea, very severe glaucoma, or inflammation on the inside of the eye cause the conjunctiva to become inflamed and pink. Vision is usually normal if the pink eye is really conjunctivitis. If vision is affected, or if the problem does not get better in a few days, see an ophthalmologist.

Giant Papillary Conjunctivitis (GPC)
Giant papillary conjunctivitis (GPC) is an inflammation of the inner surface of the eyelids, most frequently associated with contact lens wear. It can develop in people who wear either soft or rigid gas permeable contact lenses and can occur at any time, even if an individual has successfully worn contacts for a number of years. Although not vision threatening, GPC can be inconvenient and may require one to stop wearing contacts temporarily or even permanently.
The typical symptoms of GPC include red, irritated eyes, often with itching and mucus discharge. Blurred vision and light sensitivity can also occur. GPC is not an infection, but a hypersensitivity of the membrane covering the inner lids and the whites of the eyes. The inner lining of the eyelid becomes roughened and inflamed by constant blinking over a contact lens or other foreign body such as an artificial eye. Hard, flat elevations in a cobblestone pattern develop on the undersurface of the upper eyelid. Eventually the entire eye becomes irritated.
In most cases, treatment of GPC involves discontinuing the use of contact lenses to allow the eye to rest. Eyedrops are frequently prescribed to control inflammation. Many people find their symptoms are relieved when contact lens wear is discontinued. Unfortunately, the symptoms can return when lens wear is resumed.
Once GPC is under control, it may be helpful to consider changing to new contacts or disposable contacts. Changing lens care systems and cleansing solutions can also be helpful. After an episode of GPC, limit the amount of time lenses are worn, and increase the time slowly.
Once it develops, GPC may be an ongoing problem. Prolonged GPC may be more difficult to treat.
 
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