1948
DOI: 10.1111/j.1746-1561.1948.tb00036.x
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The Age‐incidence of Defects in School Children, Their Changing Health Status*

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1954
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“…In 1945 the Illinois Commission for Handicapped Children (52) estimated that 20 per cent of the school population had some degree of visual defect and gave the same estimates for the number of partially sighted and blind as reported by the White House Conference. In 1945 a survey of over 80,000 school children in New York State showed the incidence of visual impairment to be 205 per thousand (72). Undoubtedly mild defects, in fact all degrees of impairment, are more numerous in the adult population.…”
Section: An Introduction To Clinical Psychology [12mentioning
confidence: 99%
“…In 1945 the Illinois Commission for Handicapped Children (52) estimated that 20 per cent of the school population had some degree of visual defect and gave the same estimates for the number of partially sighted and blind as reported by the White House Conference. In 1945 a survey of over 80,000 school children in New York State showed the incidence of visual impairment to be 205 per thousand (72). Undoubtedly mild defects, in fact all degrees of impairment, are more numerous in the adult population.…”
Section: An Introduction To Clinical Psychology [12mentioning
confidence: 99%