I was talking to my neurologist about the new (to me) FL-41 coating I got for my glasses, which helps my headaches substantially and makes me actually use them regularly. He asked to see them, I assumed just to see how dark the tint was. But he spent an awfully long time looking at them, which I found odd.
He then turned his attention back to me and excitedly said “you have antimetropia, getting that corrected probably helps as much as the coating!”
He went on to explain that my left eye is farsighted and my right eye is nearsighted, which, uncorrected, leads to headaches, photophobia (sensitivity to light) and various other issues, and can eventually cause lazy eye, where the brain filters out info from one eye entirely. My optometrists never said anything about that, but probably should have. I would have actually worn the glasses more often even before the coating (the correction itself is pretty mild). Though that does explain why I could never figure out if I was supposed to wear them all the time or not.
I looked it up when I got home, and I guess it only impacts 0.1% of the population, so yay. Make that TWO rare conditions! (I also have a birth defect where my bottom 3 vertebrae are fused to my pelvis, lumbar pillows, even the ones built into car seats, are horrible torture devices for me)
Haha that’s wild, I mean I didn’t realize there was a problem, either, but thats mostly because my eyes weren’t really that bad when I got glasses, and I only got them to see if they’d help the headaches, so on and off for years I’d get new glasses made, wear them for several months, then stop.
I don’t really have stereoscopic (3D) vision, though, as far as I can tell. Like I have depth perception, but it’s exactly the same with one eye or two, so I think I use non-stereoscopic cues. Probably related. Do you know if your grandma has any problems with depth, and if it changes using one eye vs two?
I’m not sure if she has depth perception problems, I’ve never heard her talk about that so I would assume not. It’s possible she does have problems and just doesn’t realize it.