Photophobia is a medical symptom characterized by an abnormal intolerance to visual perception of light. It is not a morbid fear or phobia, but rather an experience of discomfort or pain to the eyes due to light exposure or by the presence of actual physical sensitivity of the eyes. Photophobia can manifest itself in an increased response to light starting at any step in the visual system, such as too much light entering the eye, or it can be caused by several different medical conditions related to the eye, the nervous system, genetic, or other causes. Some common causes of photophobia include migraine headaches, dry eyes, corneal abrasion, cataracts, and uveitis.

Photophobia is not a condition but a symptom of another problem. It can cause pain whenever youre in bright sunlight or indoor light, and it can also cause headaches. For many people, the problem is not due to any disease, but severe photophobia may occur with eye problems. If eye pain is severe, it is recommended to see a healthcare provider about the cause of light sensitivity. Proper treatment may cure the problem, and medical help should be sought right away if the pain is moderate to severe, even in low-light conditions.

In summary, photophobia is a medical symptom characterized by an abnormal intolerance to visual perception of light. It is not a condition but a symptom of another problem, and it can cause pain and discomfort to the eyes. Photophobia can be caused by several different medical conditions related to the eye, the nervous system, genetic, or other causes. If eye pain is severe, it is recommended to see a healthcare provider about the cause of light sensitivity.