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The evaluation of serial visual fields is an integral component in the assessment of glaucoma progression. Test variability,1 2 however, makes the assessment of progression difficult, even in reliable field series by experienced observers.3 4 Various methods have been reported to differentiate test variability. Examples include visual field indices that measure overall change,5 spatial and temporal processing …
Competing interests None.
Ethics approval This study was conducted with the approval of the Wills Eye Institute Institutional Review Board, located in Philadelphia, Pennsylvania.
Provenance and peer review Not commissioned; externally peer reviewed.