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. Author manuscript; available in PMC: 2019 Nov 8.
Published in final edited form as: J Ment Health Res Intellect Disabil. 2018 Jul 24;11(4):251–265. doi: 10.1080/19315864.2018.1497108

Table 3:

Visual Impairment Scale by Developmental Disorder

Visual Impairment Scale Down Syndrome Autism Other All
1 18 31 50 99
2 20 2 8 30
3 1 0 7 8
4 0 1 10 11
Total 39 34 75 148