Super interesting concept, didn't even consider that optimetrist simulator could be a game!
I am really bad at remembering these things, so a post it note of sorts that I could check to see what type of customers wants what would have been great (unless I missed that), but I muddled through.
The controls threw me off at first, but once I understood in which order I had to click them, it was very smooth sailing. Would have probably loved it even more if I had to rotate the actual device around for each eye, but using slider worked just fine!
Cool entry!