How if at all possible can you lessen or fix a scratch on regular vision correcting glasses?

Optician: You should see your local optician to address this. They have the most experience with fixing scratches on eyeglasses.

New glasses: It's probably time to replace the lenses in your glasses. However, it would be a good idea to have your local eye care provider check your glasses prescription and give you an updated rx for new glasses before replacing your currently scratched lenses.