100kristine
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
The exam we provided is just a free sample for folks to play with - contact information is collected for paying customers (in a slightly different flow).
All existing online eye exams focus on prescription renewals and omit the eye health checks that you would get in an in-person visit. (An optometrist can catch all sorts of issues - eye tumors, early signs of glaucoma etc.) We're working to build a better and safer way to access the full spectrum of eye care online, going beyond just prescription renewals.
The current exam has some eye health maneuvers that flag unusual symptoms and intake answers that should be investigated more closely. This is just the start though - much more in the works!
What browser/device are you on? We don't support mobile (added this to post!) because the vision charts need to be displayed at a certain size. There's usually a warning that pops up for mobile, but it's earlier in the flow than what we posted to HKN.
I can't seem to replicate the issues you're having on firefox/desktop, it displays normally for me. If you shoot me a screenshot at [email protected], happy to take a look.