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Yes, it can be, depending on its size. The revised guidelines for amblyopia risk factors published by the American Association for Pediatric Ophthalmology and Strabismus (AAPOS) in 2012 consider any media opacity, such as a cataract, that is greater than 1 millimeter (1 mm) in size to be a risk factor for amblyopia, which is the leading cause of vision loss among children and young adults.