title: [Comparison between binocular and monocular reading ability and its relation with central visual field sensitivity in glaucoma patients].
abstract: OBJECTIVE
  To evaluate binocular and monocular reading ability in glaucoma patients with good visual acuity and to examine its relationship with central visual field sensitivity.
  
  
  METHODS
  Glaucoma patients(35 individuals, mean +/- SD : 51.8 +/- 12.9 years) with a decimal visual acuity in each eye of >or=1.0, reading ability was tested both binocular and monocular using Japanese version of Minnesota Reading Acuity Chart (MNREAD-J). Reading ability parameters were calculated for maximum reading speed (MRS), critical print size (CPS), and reading acuity (RA). The results were compared with those of people with normal vision; differences in reading ability under varied testing conditions and correlations between visual field sensitivity and each parameter were examined.
  
  
  RESULTS
  Under binocular reading conditions, MRS, CPS, and RA were decreased significantly in glaucoma patients compared with normal controls (p = 0.00044, p = 0.00004, p = 0.00028, respectively). Under monocular reading conditions, glaucoma patient MRS and RA were decreased significantly in comparison with normal controls (p=0.00155, p= 0.00142). In glaucoma patients undergoing binocular reading tests, MRS was greatest in the paracentral bottom right quadrant of the worse eye (r = 0.41709, p= 0.04447). The CPS decreased in proportion to the extent of the difference between both eyes in the mean deviation value and the visual field sensitivity of the paracentral bottom left (r = 0.40693, p = 0.02699 and r=0.41478, p=0.02384). RA improved in proportion to the extent of the difference between both eyes in the visual field sensitivity of the upper left (r = 0.33557, p=0.04799).
  
  
  CONCLUSIONS
  In glaucoma patients, binocular reading is not necessarily useful in cases of visual field sensitivity differences.
authors.affiliation: Division of Ophthalmology and Visual Science, Graduated School of Medical and Dental Sciences, Niigata University. ishi-m@med.niigata-u.ac.jp
authors.forename: Masako
authors.initials: M
authors.lastname: Ishii
authors.affiliation: Division of Ophthalmology and Visual Science, Graduated School of Medical and Dental Sciences, Niigata University.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Seki
authors.affiliation: Division of Ophthalmology and Visual Science, Graduated School of Medical and Dental Sciences, Niigata University.
authors.forename: Ryoko
authors.initials: R
authors.lastname: Harigai
authors.affiliation: Faculty of Medical Technology, Niigata University of Health and Welfare.
authors.forename: Haruki
authors.initials: H
authors.lastname: Abe
authors.affiliation: Division of Ophthalmology and Visual Science, Graduated School of Medical and Dental Sciences, Niigata University.
authors.forename: Takeo
authors.initials: T
authors.lastname: Fukuchi
mesh_terms: D005260:Female; D005901:Glaucoma / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011932:Reading; D015348:Vision, Binocular / Q000502:physiology*; D015349:Vision, Monocular / Q000502:physiology*; D014794:Visual Fields