At what point do you no longer need to wear prescription eyeglasses? I was originally somewhat myopic, but as I get older, my prescription is reversing itself (presbyopia?) . My last checkup put my right eye and 20/35 and my left at 20/25. Legal to drive, but not by much. At what point, 20/??, do you say that the extra visual acuity isn't worth the cost and hassle of prescription glasses.