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Alterations in the shape of the automated perimetric profile arising from cataract

  • Clinical Investigations
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Abstract

The attenuation of the perimetric response arising from cataract was investigated and related to the degree of cataract quantified by glare sensitivity. Visual fields were measured with the Octopus and Dicon automated perimeters out to an eccentricity of 30°. Nuclear and non-nuclear cataracts differed in their effect on the perimetric profile. Non-nuclear cataracts exhibited the same qualitative characteristics as a model developed in previous studies, whereby the overall pattern of perimetric attenuation was dependent upon target configuration. For these subjects, perimetric sensitivity was depressed to a greater extent at an eccentricity of 30° compared with fixation when measured with the large projected stimuli, whereas the reverse was true when sensitivity was measured with the small LED stimuli. Conversely, nuclear cataracts depressed perimetric sensitivity to a greater extent at the fovea compared with more peripheral regions for both the large projected and small LED stimuli.

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Authors and Affiliations

  1. Department of Vision Sciences, Aston University, Aston Triangle, B4 7ET, Birmingham, United Kingdom

    Joanne M. Wood & John M. Wild

  2. Retina Department, Birmingham and Midland Eye Hospital, Church Street, B3 2NS, Birmingham, United Kingdom

    David L. Smerdon & S. James Crews

  3. Visual Science Unit, Radcliffe Infirmary, Woodstock Road, OX2 6HE, Oxford, United Kingdom

    Joanne M. Wood

  4. Eye, Ear, Nose and Throat Centre, North Riding Infirmary, Newport Road, TS1 5JE, Middlesbrough, Cleveland, United Kingdom

    David L. Smerdon

Authors
  1. Joanne M. Wood
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  2. John M. Wild
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  3. David L. Smerdon
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  4. S. James Crews
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Wood, J.M., Wild, J.M., Smerdon, D.L. et al. Alterations in the shape of the automated perimetric profile arising from cataract. Graefe's Arch Clin Exp Ophthalmol 227, 157–161 (1989). https://doi.org/10.1007/BF02169790

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  • DOI: https://doi.org/10.1007/BF02169790

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