Common Eye Disorders
Red eyes - potential causes, Why do I have redness? - A State of Sight #78and how
Jump to content. Conjunctivitis is inflammation of the conjunctiva, the thin, filmy membrane that covers the white of your eye. The conjunctiva, which produces mucus to coat and lubricate the surface of the eye, contains fine blood vessels that can be seen on close inspection. When the conjunctiva becomes irritated or inflamed, the blood vessels, which supply it, enlarge and become more prominent, causing the eye to turn red. The symptoms described above may not necessarily mean that you have conjunctivitis.
An eye allergy, also known as allergic conjunctivitis, is an adverse immune response that occurs when the eye comes into contact with an irritating substance.
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Diagnosis matters most for proper treatment. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Even if you find a guide to help you choose the best eye drops from the drugstore aisle, you may treat for allergies when the real problem is an eye infection. Eye infections can come from many causes — virus, bacteria, parasite or fungus — and the symptoms vary with the cause, but in general, infections have a longer list of symptoms when compared to allergies.
A recent college graduate, she had struggled for months with on-and-off watery, red eyes and sensitivity to light. She found it difficult to look at a computer screen at the medical startup where she worked in Cambridge, Mass. Thinking the symptoms might be due to conjunctivitis, a bacterial infection, her primary care doctor prescribed an antibiotic eye ointment. By November , however, her left eye had taken a turn for the worse; she woke one morning to find it swollen shut. Upon closer inspection, Ngo noted the film of tears that should smoothly cover the surface of the eye was patchy.
Red eyes or red eye is a condition where the white of the eye the sclera has become reddened or "bloodshot. The appearance of red eye can vary widely.