sorry that's -11.75 (correction)
Just to let you know rach0116 that I had to wear glasses also and my prescription was -12.5 in one and and 11.75 in the other so I think you are far away from going blind...then I had lasik eye surgery and my vision is pretty close to 20/20...
Legal blindness is generally regarded as being unable to see 20/200 or better even with corrective lenses. In other words if glasses or contacts did not help you see better than 20/200 you would be legally blind. You on the other hand can probably see great with them on so you are not legally blind.
MJK MD