title: [Low vision aids for reading in scar stage of age-related macular degeneration].
abstract: OBJECTIVE
  To evaluate the inter-relationship among near visual acuity, eccentricity of preferred retinal locus(PRL), and choice of low vision aids for reading in patients with bilateral age-related macular degeneration(AMD).
  
  
  METHODS
  The preferred eye of 44 patients having bilateral disciform stage AMD was examined. The PRL was detected and its eccentricity from the fovea was measured by scanning laser ophthalmoscopic microperimetry. Magnification of a low vision aid for reading newsprint was determined by the critical print size which was calculated using the MNREAD-J. The type of preferred aid was chosen from high-plus lens glasses, magnifiers, and closed-circuit televisions. The inter-relationship among near visual acuity, eccentricity of the PRL, and magnification and type of low vision aid for reading were evaluated.
  
  
  RESULTS
  The magnification of the aid was correlated with the eccentricity of PRL in eyes with near visual acuity of 0.2 or less although no correlation was found in eyes with near visual acuity better than 0.3. High plus lens glasses were selected by patients with near visual acuity better than 0.2 and eccentricity of 2 degrees or less. Magnifiers were selected by patients with near visual acuity better than 0.1 and eccentricity of 5 degrees or less. Closed-circuit televisions were selected by patients with near visual acuity of 0.1 or less and eccentricity of 5 degrees or more.
  
  
  CONCLUSIONS
  The eccentricity of PRL should be taken into account in determining low vision aids for reading, especially in patients with near visual acuity of 0.2 or less. Choice of the type of low vision aid depends on not only near visual acuity but also on eccentricity of PRL.
authors.affiliation: Department of Ophthalmology, Surugadai Hospital of Nihon University, 1-8-13 Surugadai, Kanda, Chiyoda-ku, Tokyo 101-8309, Japan.
authors.forename: Kyoko
authors.initials: K
authors.lastname: Fujita
authors.forename: Mitsuko
authors.initials: M
authors.lastname: Yuzawa
authors.forename: Hitomi
authors.initials: H
authors.lastname: Nakamura
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007909:Lenses; D008268:Macular Degeneration / Q000150:complications / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011932:Reading; D012160:Retina / Q000503:physiopathology*; D015354:Vision, Low / Q000209:etiology / Q000503:physiopathology*; D014792:Visual Acuity; D058609:Visual Field Tests