As a father of a kid with 1,5 eye -- my daughter's left eye stopped developing at young age so we missed the window of opportunity to have it corrected on time,

As a father of a kid with 1,5 eye -- my daughter's left eye stopped developing at young age so we missed the window of opportunity to have it corrected on time, so one eye does most of the heavy lifting for her, and the other eye can only see a blur -- your comment made me think of possible use cases for the monocle for her. Maybe notifications using colors and shapes that could be perceived by the underdeveloped eye. I believe the signals from the monocle would not interfere in any way with the good eye, so from a brain's perspective, both things could coexist independently. And, as you suggested, it could well be a "clip-on" addition to the frame itself. That would be nice.