What Causes A Sensitivity To Light?
Corneal Abrasion
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A corneal abrasion is an injury that occurs in the eyes where the protective, transparent layer of the eye (the cornea) is scratched. Corneal abrasions are most commonly caused by contact with substances like dirt, wood shavings, contact lenses, dust, sand, metal particles, plant matter, or paper. Symptoms that occur in individuals who experience a corneal abrasion include gritty feeling in the eye, redness, headache, pain in the eye, tearing, and light sensitivity. An individual's cornea contains a high concentration of nerve cells, which causes it to be one of the most sensitive parts of the human body. A corneal abrasion induces the natural response of the patient's immune system, which causes inflammation in the affected eye. The combination of the injury itself, swelling, and inflammation can cause the eye to be dysfunctional in its ability to adjust to bright light. A corneal abrasion near the center of the eye can cause light rays to enter the eye abnormally, which also causes photophobia.
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