Influence of viewing distance on vertical strabismus

  title={Influence of viewing distance on vertical strabismus},
  author={Michael Graef and Daniela Rost and Ralph Becker},
  journal={Graefe's Archive for Clinical and Experimental Ophthalmology},
Vertical strabismus can be modulated by the viewing distance. We report on 19 patients with this disorder. The following squint angles were measured by the alternate prism and cover test at a viewing distance of 5 m. At 0.3 m, measurements were taken with and without an addition of 3.0 D to the corrected refraction. Cases of a dissociated vertical deviation were excluded. Fifteen patients underwent surgery. They were reexamined 3 months later. At a viewing distance of 5 m, the vertical… CONTINUE READING

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