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Asked by: Willem Folta
medical health eye and vision conditionsWhat is a normal visual field test result?
Similarly, what does a normal visual field test look like?
The Visual Field A normal visual field extendsapproximately100° temporally (laterally), 60° nasally,60°superiorly, and 70° inferiorly [2].
Consequently, what do the numbers mean on a visual field test?
A value of 0 means the patient could not seethebrightest target, and a 50 means the dimmest targetwasseen. Most values are around 30 dB, and anynumbersbelow this range imply a possible visualfielddefect.
Reliability of visual field testing isdifficultto control and often requires repeat testing toassureaccurate results. Patient attention and ability areprimaryconsiderations, but there are many other factors thatinfluencevisual field performance.