Abstract
Abstract While Robinson has raised a number of issues from our study and is concerned about its limitations (as he sees them), the most critical findings and their implications appear to have been completely overlooked. In particular, Robinson ignores the findings that children diagnosed as suffering from the “scotopic sensitivity” syndrome differ significantly on a number of personality variables from those diagnosed as not “scotopic sensitive,” and that for children diagnosed as “scotopic sensitive” there were no differences in performance with prescribed Irlen lenses compared with any other lens condition on standardised reading or objective perceptual tasks. This latter result is crucial in view of the fact that, as acknowledged by Robinson, Irlen lenses are prescribed on the basis of a diagnostic procedure which purports to demonstrate an immediate effect based on reading and perceptual tasks for each individual.
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