Intersession reproducibility of retinal nerve fiber layer thickness measurements by GDx-VCC in healthy and glaucomatous eyes

Pierluigi Iacono, Stefano Da Pozzo, Mirko Fuser, Roberta Marchesan, Giuseppe Ravalico

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Background: To assess intersession reproducibility of retinal nerve fiber layer (RNFL) thickness measurements on scanning laser polarimetry with variable corneal compensation (GDx-VCC) in a sample of healthy subjects and glaucoma patients. Methods: One eye each from 29 healthy and 29 glaucomatous subjects was selected and underwent RNFL scanning by the same operator at baseline and 1 week later. Glaucoma diagnosis relied on the presence of a reproducible defect on automated perimetry. GDx-VCC parameters considered were those available on page 1 of the printout [TSNIT average and standard deviation (SD), superior and inferior average (SA, IA), Nerve Fiber Indicator]. Reproducibility was assessed by calculating coefficient of variation and intraclass correlation coefficient separately for the two groups and for each parameter. The percentage of eyes with an intersession difference in thickness parameters of more than 5% was also calculated. Results: Coefficient of variation was

Original languageEnglish
Pages (from-to)266-271
Number of pages6
JournalOphthalmologica
Volume220
Issue number4
DOIs
Publication statusPublished - Jun 2006

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Nerve Fibers
Glaucoma
Scanning Laser Polarimetry
Visual Field Tests
Healthy Volunteers

Keywords

  • Automated perimetry
  • Glaucoma
  • Reproducibility
  • Scanning laser polarimetry

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Intersession reproducibility of retinal nerve fiber layer thickness measurements by GDx-VCC in healthy and glaucomatous eyes. / Iacono, Pierluigi; Da Pozzo, Stefano; Fuser, Mirko; Marchesan, Roberta; Ravalico, Giuseppe.

In: Ophthalmologica, Vol. 220, No. 4, 06.2006, p. 266-271.

Research output: Contribution to journalArticle

Iacono, Pierluigi ; Da Pozzo, Stefano ; Fuser, Mirko ; Marchesan, Roberta ; Ravalico, Giuseppe. / Intersession reproducibility of retinal nerve fiber layer thickness measurements by GDx-VCC in healthy and glaucomatous eyes. In: Ophthalmologica. 2006 ; Vol. 220, No. 4. pp. 266-271.
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