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Reading performance with low vision aids: relationship with contrast sensitivity
Author(s) -
Leat Susan J.,
Woodhouse J. Margaret
Publication year - 1993
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.1475-1313.1993.tb00420.x
Subject(s) - reading (process) , contrast (vision) , sensitivity (control systems) , audiology , psychology , optometry , artificial intelligence , computer science , medicine , linguistics , electronic engineering , engineering , philosophy
Reading performance and contrast sensitivity were measured in 30 subjects with low vision due to a variety of pathologies. The Pepper test was used to quantify reading rate and accuracy with the subject's own prescribed optical reading low vision aid. It was found that both reading rate and accuracy were repeatable measures. Reading rates were found to he correlated with contrast sensitivity at 0.5c/deg ( r = 0.62). Multiple regression analysis also showed that the best predictor of reading rate was contrast sensitivity at 0.5c/dcg and that no other components of the contrast sensitivity function helped to explain more of the variance. This indicates that primarily low spatial frequencies are necessary for reading with optical low vision aids, as has been found previously for reading with a close circuit TV system.