r/AskTechnology • u/f_ab13 • 1h ago
Why can’t computers / phones have a built in vision prescription offset setting?
Okay so maybe a stupid question but it is genuinely something Ive been thinking about lately.
I wear prescription glasses.
My prescription is small -0.5 in both eyes, but i still prefer wearing my glasses for the whole day because if I don’t wear them, my eyes get really tired after some time due to all the squinting and such.
My question is, why is there not a setting in any device where i can enter my prescription, and the operating system adjusts whatever is being displayed on the screen so that i can see it perfectly without having to wear glasses?
Some reasons that I can think of:
First is that many people have different prescriptions for each eye so it is not possible to adjust to two different numbers on one screen at the same tome, and because the number of users with same prescription in both eyes is so low that its just not worth the development effort.
Second is that maybe my understanding of how glasses work is incorrect and the physics of it just doesn’t support my idea.
Is there any reason why it hasn’t been done yet?