I have worn progressive lens for years. I had bi-focals at first but couldn't read the music at the organ. It was in that never land. The PG lens fixed that. Also, I am a BIG fan of proper light. I have three Ott lites that I use for sewing. Those little lites on the machines are a joke. My son does professional lighting for the entertainment field and they mostly use LED's. He can't understand why they don't have them on the machines.