It is the first automated perimeter that performs standard 24-2, 30-2 and 10-2 visual field tests containing age-matched databases of retinal sensitivity in normal subjects, as well as a very fast screening and delivers an exceptional quality infra-red (IR), red-free and TrueColor (white light 440-650 nm) confocal images at the same time.
COMPASS actively compensates for eye movement with retinal tracking in the same way as the modern high-end OCT devices. The perimetric stimuli are automatically re-positioned to correct retinal locations in real time. COMPASS automatically repeats stimuli that were lost for eye blinks. Thanks to the active retinal tracker, the results are most accurate and repeatable for follow-up. COMPASS is automated; it has no trial lenses because it has auto-focus for always clear stimuli, it comprises auto-alignment, retinal tracking during perimetry, and at the end of each test COMPASS takes a very high-quality fundus image that immediately shows if there are changes in the retina or the optic disc. For a very fast screening purposes COMPASS provides suprathreshold tests, especially the Quick Suprathreshold test for 30-90 second test pattern covering the central and nasal step area.