A corneal ulcer is an open sore on the cornea, an often painful condition that requires medical treatment. You can think of the cornea as similar to the clear crystal that covers a watch face -- a protective cover for the iris of the eye. When the cornea suffers a blemish, as in the case of corneal ulcer, the consequences can be severe. If an affected individual does not receive treatment, these blemishes can lead to blindness.
Eye infections are the most common cause of corneal ulcers, so many of the early symptoms are symptoms of the infection. These include itching or watering; the eye may be pink or even red and feel sensitive to light. Burning or stinging in the affected eye is also not uncommon. In some cases, people note a pus-like discharge. Fortunately, corneal ulcers are treatable.
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