2020–2021 BCSC Basic and Clinical Science Course™
Chapter 6: Perimetry
Standard “white-on-white” automated perimetry remains the gold standard for functional evaluation in glaucoma.
A high false-positive rate (>15%) is very detrimental to a visual field test and indicates low reliability. Absence of a blind spot is also typically a sign of an unreliable field.
When assessing the presence of abnormalities in visual field testing, it is important to verify whether the defect is repeatable and present in approximately the same location, and that the abnormalities are not due to artifacts.
When assessing the visual field for disease progression, it is important to confirm that a new visual field defect or expansion of a preexisting defect is repeatable on subsequent examinations.
Measuring the rate of visual field change by trend-based analysis is essential for estimating the risk of functional impairment and determining management.
Excerpted from BCSC 2020-2021 series: Section 10 - Glaucoma. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.