Red eyes can be present in one or the two eyes and might have pain, tingling, discharges, swelling, or visual problems like blurred vision. Sometimes, red eyes can simply be due to irritation.
Red eyes may show up all of a sudden, especially when there are allergies or eye injuries. If you think that your red eyes are an emergency, you should visit an eye specialist.
Red eyes may be due to the enlargement of the blood vessels on the eyes. They may also be due to subconjunctival hemorrhage, broken blood vessels, blepharitis or inflamed eyelids and sties or red bumps on the eye lids. Contact lenses can also bring about red eyes.
Red eyes typically are caused by hypersensitivity, eyestrain, over-wearing of contact lenses or eye infections like conjunctivitis.
