DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Close-up of the eye showing a conjunctival haemorrhage. Blood from a ruptured blood vessel has escaped below the conjunctiva, the delicate mucous membrane that covers the eye and lines the inside of the eyelids. The condition, sometimes known as "red eye", is usually painless and may occur following a minor injury to the eye or even after vigorous nose-blowing. It may also occur in more serious conditions such as conjunctivitis and iritis (inflammation of the conjunctiva & iris) and glaucoma (loss of vision due to abnormally high pressure within the eyeball).
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