Details

Autor(en) / Beteiligte

• Redmond, Tony

Titel

Perimetric variability – psychophysics

Ist Teil von

• Acta ophthalmologica (Oxford, England), 2022-12, Vol.100 (S275), p.n/a

Ort / Verlag

Malden: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• The human visual system is inherently noisy and the limits of vision can fluctuate during and between measurements. The way in which tests of vision are designed can also introduce variability. This can make it difficult to discern true changes in the visual field from fluctuations around normal levels. Variability can come from the choice of parameters such as the stimulus, thresholding algorithm, step size, and test duration. The ability to identify visual field damage from normality, and changes in vision from stability, relies greatly upon having a test that has a high disease signal and low variability, while also keeping the test at a manageable duration for patients. In this course, we will discuss the importance of understanding variability, how it is related to visual field test design, as well as the efforts that are being made to reduce it.