BARRAQUER, BARCELONA, ISM / SCIENCE PHOTO LIBRARY BARRAQUER, BARCELONA, ISM / SCIENCE PHOTO LIBRARY
Cortical cataract in the left eye of an elderly patient. A cataract is an opacity in the lens of the eye that results in blurred vision. Unless the lens is replaced, a cataract can eventually cause loss of vision. A cortical cataract is a cataract that occurs in the outer layer (cortex) of the lens.
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