Is there a way to know your uncorrected vision from an eyeglass prescription?

[prescription glasses]

Is there a way to know your uncorrected vision (e.g. 20/50 or whatever) from an eyeglass prescription? In other words, if I have a current eyeglass prescription can I tell from that what my "UNCORRECTED VISION" reading would be? Thank you for your help!

[children eyeglasses]

As far as I know, the only way to know what your uncorrected vision is when you get yours eyes tested and you read the chart without your glasses. Generally your eye doctor already knows you need glasses so when he tests your eyes they will usually test you with your current pair of glasses on to see if that prescription is helping you in the way they should. If those glasses aren't helping you to see at your maximum potential, then he does the eye testing to see what your new prescription should be. If in fact you were tested at the Dr's office without your glasses then you can call the Dr’s office and see what that vision was.