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(1) Conjunctivitis evoked by allergens, bacteria, viruses, air-borne irritants, or linked to episcleritis, corneal ulcer—infectious or traumatic—uveitis, glaucoma—acute or chronic—cellulitis, etc.
(2) Blood-shot eyes due a lack of sleep, which explains the term, ‘red eye special’—a long night flight, usually understood to be from the west to the east coast of the US. Cf Pink-eye
Vox populi A popular term for the appearance of the eyes of those who have been photographed with a flash under low-light conditions. Red eye is characteristic of a normal retina. The finding of one red eye and the other white—especially in young children—is often associated with retinoblastoma, a malignant tumour of the eyeball (bulbus oculi) and should be a trigger for an immediate eye exam in a toddler or infant.
red eyeSee CONJUNCTIVITIS.
Patient discussion about red eye
Q. What Causes Conjunctivitis? I woke up this morning with a red eye. My doctor said it's probably conjunctivitis. What causes this?
Q. how long does an eye infection suppose to last if I don't usually have any eye problems? I'm not even sure how I got this infection- my eye was itchy a few days ago and after too much touching-I guess-it got real red and swollen. It hurt for like a day and now it just keeps the redness. something to be worried about? any eye professionals there? I don't use glasses or contacts so I'm kinda bad at this- never gave my eye any special attention...thanks!