title: [Use of a scanning laser tomograph to evaluate the optic disc of the normal eyes].
abstract: We evaluated the optic disc in 77 eyes of 77 normal volunteers using a scanning laser tomograph (Heidelberg Retina Tomograph: HRT, version 1.11). Particular attention was paid to age, refractive error, and disc size. The topographic parameters included: cup area, C/D area ratio, rim area, cup volume, rim volume, mean cup depth, maximum cup depth, cup shape measure, height variation contour, mean RNFL thickness, and RNFL cross section area. There was a significant decline in mean RNFL thickness and RNFL cross section area with increase in age (p < 0.05). The mean and maximum cup depths were significantly deeper in myopic eyes (p < 0.05). Large discs had large values of cup area, C/D area ratio, rim area, cup volume, mean cup depth, cup shape measure (p < 0.01), and maximum cup depth (p < 0.05). Large discs had small values of mean RNFL thickness and RNFL cross section area. Rim volume was independent of age, refractive error, or disc area.
authors.affiliation: Eye Division of Olympia Medical Clinic, Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Maeda
authors.forename: Y
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Y
authors.initials: Y
authors.lastname: Inoue
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007834:Lasers; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000473:pathology; D009898:Optic Disk / Q000033:anatomy & histology* / Q000473:pathology; D014054:Tomography / Q000379:methods*