Photophobia

Photophobia  is a symptom of abnormal intolerance to visual perception of light. As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical photosensitivity of the eyes, though the term is sometimes additionally applied to abnormal or irrational fearof light such as heliophobia.