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Bull's eye maculopathy with early cone degeneration.
  1. R H Grey,
  2. R K Blach and
  3. W M Barnard


    Seven patients with acquired cone degeneration were investigated. The initial visual acuities in 6 of the series were normal or near normal but later deteriorated, although they did not fall below 6/60 in any patient. All the patients tested had colour vision defects and abnormalities on electrodiagnostic testing referable to the cone system. The typical picture was of a bull's eye maculopathy accompanied by an annular scotoma around the fovea, but the clinical and electrophysiological investigations showed that there were considerable variations especially in the early stages.

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