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ASSESSMENT OF CHILDREN'S COLOUR, VISION USING THE PICKFORD‐NICOLSON ANOMALOSCOPE
Author(s) -
Lloyd M.J.,
Lowther P. S.,
Heron G.
Publication year - 1984
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1984.tb00330.x
Subject(s) - colour vision , optometry , range (aeronautics) , point (geometry) , matching (statistics) , optics , dispersion (optics) , mathematics , physics , computer science , medicine , artificial intelligence , materials science , geometry , statistics , composite material
The colour vision of 439 boys, aged 4–11 years, was measured by the Pickford‐ Nicolson anomaloscope and four pseudoisochromatic tests. Matching range and dispersion of mid match point were found to be larger than adult values, but did not decrease with age. However, younger children took longer to establish matching range. Twenty‐eight(6.4%) colour defectives were found and it is concluded that the Pickford‐ Nicolson anomaloscope gives valid results with children.