Avoid bright sunlight and other bright lights if you're sensitive to light. Wear wide-brimmed hats and appropriate sun protection on your eyes. While wearing sunglasses, your pupil dilates to allow more light to enter your eye. Additional harmful UV rays enter as well. Keep in mind that light sensitivity may be allowing your eye to heal, especially in cases of photophobia associated with refractive surgery, corneal abrasion and other eye conditions.
Light sensitivity is frequently a natural defense when the eye is traumatized.
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