title: [Evaluation of the effect of aging on the retinal nerve fiber layer thickness using scanning laser polarimeter].
abstract: OBJECTIVE
  To study age-related effects on the retinal nerve fiber layer thickness (RNFLT).
  
  
  METHODS
  75 eyes of 75 normal volunteers were recruited. Their ages ranged from 20 to 66 years. They were divided into five age groups of 15 subjects each. We measured each subject's RNFLT using scanning laser polarimeter. The mean RNFLT within the 1.5 disc diameter ring around the optic nerve papilla and its four quadrants (superior, temporal, inferior and nasal) was calculated.
  
  
  RESULTS
  The mean +/- SD of RNFLT was 76.4 +/- 7.50 microm, 71.5 +/- 7.3 microm, 72.1 +/- 3.9 microm, 66.7 +/- 7.2 microm and 67.4 +/- 8.5 microm, respectively.
  
  
  CONCLUSIONS
  The RNFLT decreases with aging in the normal healthy eye.
authors.affiliation: Department of Ophthalmology, First Hospital, Beijing Medical University, Beijing 100034.
authors.forename: Q
authors.initials: Q
authors.lastname: Chi
authors.forename: T
authors.initials: T
authors.lastname: Goji
authors.forename: K
authors.initials: K
authors.lastname: Yoskiaki
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000473:pathology*; D003941:Diagnostic Techniques, Ophthalmological; D006801:Humans; D007834:Lasers; D008875:Middle Aged; D009412:Nerve Fibers / Q000473:pathology*; D009900:Optic Nerve / Q000473:pathology*