Mainstream optometry is like some gym bro going “You’re right-handed, so use less weight on the left!”
Thanks, as always, for bringing attention to these topics! I think it was one of your videos where I first noticed the term “ocular dominance”, and it all started making sense from there. I have at least two friends who are in a bad place from this shit: one has many diopters of asymmetry, the other cannot reach full acuity on one eye anymore, no matter the correction, and has both myopia and strong astigmatism on it.
IMO, the reason for dominance is likely a convergence property of the brain. When there is a good signal from one eye, the other can be used mostly for depth and minor things without much loss in overall acuity, so the brain doesn’t necessarily get stimulus to further resolve the non-dominant eye’s signal. It could be the same mechanism that causes amblyopia, and maybe also handedness, jumping leg dominance, and so forth.
For a few months, I have made it a habit to wink my less myopic eye shut every now and then. Lo and behold, I now can’t even tell which eye is dominant anymore. The “look through a frame of your hands” test ended up inconclusive, and blocking one eye only makes a difference if my left eye is beyond its maximum focusing range.
Patching could work via the same effect, reducing an unhealthy level of dominance that has been covered up by years of asymmetric lens use. That would also explain why you don’t need a lot of it, but need to do it regularly for a while: brain changes don’t require much exposure time, but they benefit greatly from repetition with sleep cycles in between.
If even small levels of amblyopia cause focusing laziness, and this in turn interferes with distance calibration enough to accelerate myopia progression, it all comes full circle. The opticians can then ramp up the difference between the eyes indefinitely, causing these crazy glasses where one lens is twice as heavy as the other.
It all becomes so logical and consistent once you get away from the crazy dogma of mainstream optometry!