A patient has a very mature unilateral cataract, No history of trauma. Symptoms were noticed during the last 4 months. The other eye appears to be fine. No history of diabetes, trauma or work exposure to radiation sources. He uses a microwave daily but is familiar with the usual precautions.
The patient during a visit to a female friend was exposed to a a very intense almost painful intermittent blinking light emanating from a fixture situated on the right side. This exposure occurred seven to eight months before the perception of his symptoms.
The woman ran precipitously out of the room avoiding looking towards the light source and stayed away for a few minutes, while asking the patient stay there.
His visual impairment on the right side started soon after this single event. He has no symptoms from his other eye; which the examiner described as fine. His Intraocular pressure is normal on both sides.
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There is no correlation between exposure to this bright light and the development of cataract in right eye. If this light was responsible for the development of cataract, it should be for both eyes not only one. We should look for other causes of cataract such as trauma, intraocular pathology in that eye and certain eye drops.