Light sensitivity is a hypersensitivity to light. A sudden onset of substantial or even painful light sensitivity (photophobia) may be caused by inflammation in the eye. This may be due to a foreign body in the eye, an infection of the cornea or an inflammation of the iris or uvea.
Light sensitivity can also occur after having LASIK or cataract surgery. A gradual onset of less severe sensitivity to light may be associated with cataract or tear film abnormalities such as dry eye.
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