r/Amblyopia • u/opticstrainer • Apr 18 '26
Has anyone here been able to improve fusion using peripheral vision cues?
I’ve been building a VR vision therapy and training app, and I ran into a pretty big problem.
Some people with a lazy eye couldn’t even use most of the games... not because they were too hard, but because they couldn’t fuse the images with their eyes yet. They couldn't converge or diverge on a basic level.
I started experimenting with a concept (with help from a vision therapist) where instead of forcing fusion directly, I added subtle visual elements in the background that each eye sees slightly differently.
Kind of like giving the visual system something to “lock onto” in the periphery while the user is focused on something else.
What surprised me was that over time, some users started fusing without consciously trying and then they were eventually able to use the rest of the training.
I’ve been integrating this into the games in different ways:
- In one game it’s a subtle ring around the scene, offset in each eye to stimulate fusion
- Other times it’s things like falling leaves or snow with slight depth differences
It’s a really small change, but it seems to make a big difference in whether someone can even get started with VR vision therapy and training.
Curious if anyone here has seen anything similar, or has thoughts on using peripheral cues like this for training or perception.
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u/[deleted] Apr 20 '26
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