How can I find the prescription of my glasses?!

You can go to any eye doctor and they will have a machine that can read prescriptions. If they don't well then its trial and error

Generally, a prescription for eyeglasses is only good for 2 years, so if it was longer ago than that when you got the eye test, you would need to get a new test anyway. I suggest you make an appointment and get a new eye test (if you have insurance, it will cover part, maybe all, of it). If money is a problem, try going to Walmarts or check the fliers in the Sunday paper, as one optical chain or another is having some kind of special almost every week.

You would need an optician with specialized kit to work out your perscription from your glasses. If you bought these a long time ago its probably time for you to have another eye checkup anyway. Go to another optician and get an eye test done.

talk to your eyedoctor