Assessment of visual acuity in multiply handicapped children.
Mackie
R T
RT
McCulloch
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DL
D000015:Abnormalities, Multiple / Q000503:physiopathology*; D002648:Child; D006233:Persons with Disabilities; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D014786:Vision Disorders / Q000175:diagnosis; D014787:Vision Tests / Q000379:methods; D014792:Visual Acuity / Q000502:physiology*