I'm told by my optician that my brain never worked out how to use both eyes at once due to a squint when I was young - at any given time I'm only actually proce

I'm told by my optician that my brain never worked out how to use both eyes at once due to a squint when I was young - at any given time I'm only actually processing the input from a single eye. They attempted to correct it but my peculiar vision was picked up much too late in life so it just made me motion sick as the brain rapidly alternated from one eye to the other. It also means my depth perception is pretty appalling, at a distance I've learnt to compensate, but watching me try to put together two small objects close up can be pretty hilarious as I wildly miss. It makes sense to me that if I'm only seeing the image for the left or right eye individually the 3D effect wouldn't work.