They need to know the shape and direction of your astigmatism.
You just knowing the strength isnt enough.
If someone is too poor to afford to get a test done, you probably dont have the money to be buying a bunch of different glasses that arent going to work.
If there was a quick and easy way to do it at home, youd be able to buy some chinkshit on amazon for 20$
There is a reason that product doesnt exist, and that there are optometrists in every strip mall.
Personally I go to a real ophthalmologist using state of the art machines where I dont even have to get my eyes dilated for imaging.
And I dont even wear glasses!
Feels good not being a huge fucking poorfaggot
