May I know your degrees? I think you should buy glasses in the local optical store to avoid blur vision, dizziness and other uncomfortable symptoms. Also, the eye doctor can give you more advice in lenses choice and eye care.
As I know, nowadays there are many online optical stores can make prescription glasses for those with bad eye condition, and so many chic frames that you can select. You should pay attention to choose high quality lenses and coatings that are most suitable for yourself.