Cortical Blindness - Mental Retardation - Polydactyly is a rare form of intellectual disability characterized by below-average mental ability, vision loss and extra fingers. Individuals with this form of intellectual disability may have problems with reasoning and solving problems, as well as performing day-to-day tasks. Vision loss will lead to difficulty performing the most basic of tasks. The disorder is often diagnosed early in childhood, since the symptoms are very apparent. Slow mastering of basic tasks, and having difficulty remembering things may also suggest this disorder in children. Treatment is developed on a case-by-case basis and depends on the specific needs of the patient. Doctors may suggest patients undergo surgery to fix finger problems. Doctors seek help from various therapists and community services to provide support and care for families affected by intellectual disability and vision loss.