I ordered the progressive lenses, why is there only one ADD value on my prescription? Nancy 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 Can you fill in strong prescriptions? What is ADD? The ADD of progressive just have one side, but I need both sides? Knowledge about Eyeglasses Prescription I just placed several orders. Can I combine the shipments? Comments 0 comments Please sign in to leave a comment.