What is my glasses perscription?

Question

-250 in left eye

and -225 in right

what does that mean

Answer 1

Glasses or contacts powers are measured in units of power called diopters.

So that just says that you need 2.50 ( 2 1/2 ) diopters of power in your left lens to focus the light correctly on your retina to get a clear image.

And the same with your right lens, but it is not quite as strong.

It means you are nearsighted ( myopic) and need them for distance vision.