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Everyone at some point has had red eye. The a reddening of the sclera is when vessels are either swollen or dilated with blood. The sclera is the white of your eye.
Red eyes can cause acute pain, itching, blurred vision but in some cases there are in fact, no symptoms at all. Red eye can appear suddenly and disappear as quickly but in some cases, there may be allergies or an eye injury involved.
The appearance of the red eye ranges dependent on the severity. The sclera can be seen as bright red and covering the whole of the eye or wiggly pink lines across the sclera. Over wearing contact lenses or eye fatigue are common causes of red eye. However, the redness can be signs of something more serious such as glaucoma, scleritis or uveitis. If your eye worsens always seek medical help from an eye professional.
Not all cases are as worrying as those listed above. A simple cold or flu can cause eyes to become bloodshot and hormone changes in pregnancy can also cause red eye. A lot of people also fail to realize that smoking can damage your eyes too, that’s the obvious lung and heart problems it can cause. The treatment for red eye can vary, depending on the severity and initial cause. Always seek medical advice before you self medicate.