477

477

Schroeder SR, Marquis JG, Reese RM, Richman DM, Mayo-Ortega L, Oyama-Ganiko R, LeBlanc J, Brady N, Butler MG, Johnson T, Lawrence L.Risk factors for self-injury, aggression, and stereotyped behavior among young children at risk for intellectual and developmental disabilities. Am J Intellect Dev Disabil. 2014 Jul;119(4):351-70

Schroeder SR, Marquis JG, Reese RM, Richman DM, Mayo-Ortega L, Oyama-Ganiko R, LeBlanc J, Brady N, Butler MG, Johnson T, Lawrence L.Risk factors for self-injury, aggression, and stereotyped behavior among young children at risk for intellectual and developmental disabilities. Am J Intellect Dev Disabil. 2014 Jul;119(4):351-70

Impaired vision, blindness

What are impaired vision and blindness? The WHO definition of impaired vision is that visual acuity (after correction!) is less than 0.3 but more than 0.05 or that the field of vision is less than 30...
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