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OP-06 Video-consulting with DigiVis testing: a real-world evaluation
  1. Raisa Ahmed1,
  2. Louise Allen2
  1. 1Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
  2. 2University of Cambridge, Cambridge, UK


Introduction DigiVis is a validated CE marked web-app enabling self-testing of distance visual acuity (VA).

Aims To describe the implementation of the DigiVis test in remote consultation in the Orthoptic service.

Methods Families of children due a follow-up Orthoptic appointment were invited to have a video consultation with synchronous DigiVis VA testing. Inclusion criteria included an age of 4 years or older, a requirement primarily for VA assessment and parental agreement to participate.

Results 71 families agreed to undertake a remote consultation with DigiVis. The median age was 6 years (range 4–10). 53 (74.6%) children were having amblyopia therapy, the remainder were under observation for refractive error or intermittent tropias. 63 (88.7%) were able to complete the test over Attend Anywhere. Compared to the VA assessment at the subsequent face-to-face consultation the mean bias was 0.01 logMAR with upper and lower Limits of Agreement of +0.12logMAR and -0.10logMAR respectively. DigiVis had 100% sensitivity and specificity in identifying an intra-ocular VA difference (IOD) of 0.05logMAR or more. 47 out of 52 (90.4%) families asked said they could and would like to do asynchronous DigiVis testing in the future.

Conclusion Synchronous DigiVis testing during video-consultation can support remote consultation in selected orthoptic patients and is well accepted by most parents. It is accurate at detecting IOD and comparable to standard testing in clinic. Remote consultation with DigiVis testing may reduce time off work and school for families, reducing carbon emissions and releasing clinic space.

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