title: Contrast sensitivity function in patients with impaired oral glucose tolerance.
abstract: OBJECTIVE
  To evaluate contrast sensitivity function in patients with impaired oral glucose tolerance test (OGTT) compared with normal subjects.
  
  
  METHODS
  Sixteen patients with impaired OGTT and 11 normal control subjects were tested for contrast sensitivity function at four spatial frequencies. Glucose intolerance was established by the 1985 World Health Organization criteria.
  
  
  RESULTS
  The two groups were similar in terms of age, visual acuity, refractive correction, and lens opacities. A statistically significant loss of contrast sensitivity was associated with impaired OGTT (p < 0.001) in every spatial frequency tested.
  
  
  CONCLUSIONS
  Functional visual loss in patients with impaired glucose tolerance using the 1985 World Health Organization criteria indicates that at least part of those patients should be classified as diabetic according to the 1997 American Diabetic Association criteria. It seems that the 1997 American Diabetic Association criteria are more efficient at detecting patients with abnormal visual function.
authors.affiliation: Department of Ophthalmology, University of Patras Medical School, Greece. ifigenia@hol.gr
authors.forename: S P
authors.initials: SP
authors.lastname: Gartaganis
authors.forename: A J
authors.initials: AJ
authors.lastname: Psyrojannis
authors.forename: J X
authors.initials: JX
authors.lastname: Koliopoulos
authors.forename: E K
authors.initials: EK
authors.lastname: Mela
mesh_terms: D000328:Adult; D001786:Blood Glucose / Q000032:analysis; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D018149:Glucose Intolerance / Q000097:blood / Q000503:physiopathology*; D005951:Glucose Tolerance Test; D006801:Humans; D008297:Male; D008875:Middle Aged
chemical_list: D001786:Blood Glucose