Practical recommendations for measuring rates of visual field change in glaucoma

B. C. Chauhan, D. F. Garway-Heath, F. J. Goñi, L. Rossetti, B. Bengtsson, A. C. Viswanathan, A. Heijl

Research output: Contribution to journalReview articlepeer-review

426 Citations (Scopus)

Abstract

To date, there has been a lack of evidence-based guidance on the frequency of visual field examinations required to identify clinically meaningful rates of change in glaucoma. The objective of this perspective is to provide practical recommendations for this purpose. The primary emphasis is on the period of time and number of examinations required to measure various rates of change in mean deviation (MD) with adequate statistical power. Empirical data were used to obtain variability estimates of MD while statistical modelling techniques derived the required time periods to detect change with various degrees of visual field variability. We provide the frequency of examinations per year required to detect different amounts of change in 2, 3 and 5 years. For instance, three examinations per year are required to identify an overall change in MD of 4 dB over 2 years in a patient with average visual field variability. Recommendations on other issues such as examination type, strategy and quality are also made.

Original languageEnglish
Pages (from-to)569-573
Number of pages5
JournalBritish Journal of Ophthalmology
Volume92
Issue number4
DOIs
Publication statusPublished - Apr 2008

ASJC Scopus Subject Areas

  • Ophthalmology
  • Sensory Systems
  • Cellular and Molecular Neuroscience

Fingerprint

Dive into the research topics of 'Practical recommendations for measuring rates of visual field change in glaucoma'. Together they form a unique fingerprint.

Cite this