Posterior subcapsular cataracts (PSC) are often due to aging, but they can also occur after trauma, ingestion of corticosteroids, exposure to ionizing radiation, excessive consumption of alcoholism, and inflammation. PSC can be seen in patients younger than those presenting with nuclear or cortical cataracts, and they usually complain of glare and or monocular diplopia. Visual impairment is more pronounced in bright lights due to pupillary constriction and accommodation. As the pupil becomes miotic the light must pass through the opacity to enter the eye and this leads to a blurry image.