I ordered the progressive lenses, why is there only one ADD value on my prescription? Camellia November 27, 2019 14:58 Updated Follow The reason behind the only one ADD value progressive glasses is that it applies to both lenses. Related articles What is ADD? Knowledge about Eyeglasses Prescription Can you fill in strong prescriptions? Could I get some one-on-one assistance? Can I use the copy of my eyeglass prescription which was issued by my doctor 3 years ago? Comments 0 comments Please sign in to leave a comment.