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by Killakwinn
1844 days ago
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Yeah, in the absence of in-person supervision, there are a lot of safety measures that need to be implemented. For example, making sure that people are at the correct testing distance (via a number of potential feedback mechanisms that we're testing) and making sure that people can't zoom in on the optotypes to cheat. The psychology of how people relate to their vision -- especially the independence that good vision affords -- is very complex and certainly something I wish that our training spent more time emphasizing. There are patients who come into clinic with relatively minor and non-vision threatening problems who are afraid of imminently going blind, and there are patients on the other end of the spectrum who are imminently going to go blind but are in denial about it (or are not terribly bothered by the possibility.) Handling these scenarios and all the gray spaces inbetween is one of the more challenging parts of delivering eyecare (and healthcare in general.) Ultimately, we're aiming for clinical accuracy and scalability first, with an understanding that there are lots of underlying incentives and potential roadblocks that we will tackle head on when the time is right. |
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1. We're currently exploring doing a distance check via the webcam using triangulation and face detection to tell folks how far from the camera they are.
2. The average monitor won't add much noise - if we're going by in person eye exams as the gold standard - there's actually a lot of variance between various doctor's offices (lighting, use of a projector/mirror to simulate distance vs placing the chart on the wall).
There's an interesting angle to doing eye exams digitally where we may be able to be more accurate than in in person exam (based on institutional research studies - not something we've yet personally explored).
5. Really interesting and valid point - making these types of questions more interactive is definitely on our roadmap.
6. Clinical trials will help vet any methods we build to show how they compare to existing practices