DISA deploys automated vision screening test at SG clinic

The device provides accurate visual acuity testing that can be performed by patients.

DISA Limited’s subsidiary Digital Life Line (DLL) has deployed its Automated Visual Acuity Test (AVAT) devices at a hospital ophthalmology clinic in Singapore from 3 February 2025 to 2 February 2026.

The company said the device provides accurate visual acuity (VA) testing that can be performed by patients themselves without supervision by incorporating a familiar number pad input with audio confirmation.

AVAT also utilises a proprietary afocal optics system to recapitulate the current 6-metre test in 0.5 meters, which rules out the effects of positioning variation on test outcomes.

In a study conducted in September 2023 with 365 patients (of which, 32% were above the age of 60), the VA scores of AVAT and the manual test method were highly correlated.

Based on the criteria of VA 6/12 or worse which is used to determine additional testing with a pinhole occluder, AVAT correctly identified 163 of 168 patients, representing 97% sensitivity. In a follow-up satisfaction survey, 81.6% of patients expressed a preference for AVAT.

Under the contract, DLL will supply AVAT on a leasing basis, charging a fixed monthly rental fee along with a per-test fee.

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