According to Ladd, the result of the multiple gradations is almost like looking through a single vision lens. Best of all you can wear them all day. And because the lenses fit almost any frame, you don't have to forego fashion in favor of specs reminiscent of your grandmother's. If eyes don't lie, there's no chance of that anytime soon. And since presbyopia gets worse with age, new prescriptions are needed every few years.
Doctors typically recommend yearly eye exams once presbyopia has been diagnosed.
Certainly progressive lenses are a great idea. Unfortunately, some people may not tolerate them well. But the convenience of getting my normal eye sight back is so fantastic. After making a series of tiny incisions in the eye, plastic expanders are inserted to allow the lens more room to flex and change shape. Testimonials from patients have been positive, but long term efficacy is unclear.