Utility of Central 10 Degrees Visual Field Test With Size V Stimulus in End-Stage Glaucoma

In end-stage glaucoma, the central 10-degree visual field test with a size V stimulus provided useful information, including the number of points with detectable retinal sensitivity threshold values and retinal sensitivity threshold values.

The purpose of this study was to evaluate the clinical utility of the central 10-degree visual field test with a size V stimulus in end-stage glaucoma.

A total of 73 eyes with end-stage glaucoma (visual field limited to a radius of <10 degrees from fixation) were included. Central 10 degrees visual field tests were performed using both size III and V stimuli. Reliability indices, test duration, number of points with detectable retinal sensitivity threshold values, and retinal sensitivity threshold values at 4 central points, 4 quadrants, and 3 clusters (papillomacular area, superior half, and inferior half) were compared between the test results using size III and V stimuli.

When the size V stimulus was used, the mean test duration increased from 7.8 to 13.3 minutes ( P < 0.001), the mean number of test points with detectable retinal sensitivity threshold values in total area increased from 19.0 to 37.3 ( P < 0.001), and the mean retinal sensitivity threshold values in total area increased from 3.9 to 9.3 dB ( P < 0.001) compared with the test results with the size III stimulus. Significant increase in the visual field parameters was found in all quadrants and clusters ( P < 0.001), and a greater increase was associated with better visual acuity and greater mean deviation of the visual field ( P < 0.05).

The central 10-degree visual field test with a size V stimulus provided more information than the test with a size III stimulus in end-stage glaucoma.