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Research Article
Image size in the fundus: structural evidence for wide-field retinal magnification factor.
  1. A L Holden and
  2. F W Fitzke
  1. Department of Visual Science, Institute of Ophthalmology, London.

    Abstract

    A simple geometrical method is described of calculating the retinal magnification factor (micrometres/degree) at the ora serrata of the human eye. At the ora the magnification factor is some 176 microns/deg., whereas at the posterior pole it is 276 microns/deg. This result may be of clinical use in examinations where dimensions of tears and holes near the ora serrata are estimated.

    https://doi.org/10.1136/bjo.72.3.228

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