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An objective staging for cortical cataract in vivo aided by pattern-analysis computer

Authors
Journal
Experimental Eye Research
0014-4835
Publisher
Elsevier
Publication Date
Volume
33
Issue
6
Identifiers
DOI: 10.1016/s0014-4835(81)80099-1
Keywords
  • Biophysical Property Of The Lens

Abstract

A subjective staging system for cortical cataracts, based on retro-illumination through a dilatedpupil, has been adapted for objective assessment on a pattern analysing computer (Magiscan), using transparencies taken with a modified Zeiss slit lamp camera. The area of the pupil occupied by densities transmitting 90% or less of the background illumination is presented as a print-out of the percentage of the pupil area occupied by cataract, together with a map of the involved area. The mean annual increase of cortical cataract in a series of patients followed for up to four years was 1·6%.

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