Since the distance vision complaint for the tinted pair is specifically for driving, is the tinted pair a shorter corridor and/or the wearer leaning...
As a skier in Utah, I can tell you from years of direct, personal experience, as well as having fit thousands of fellow skiers and boarders that the...
I have used an old school (from 1945) lensmeter for the past 30 years. It finally died and decided for the sake of my staff to get an autolensmeter. ...
My go-to guess in such situations is the pt is slightly underminused. The sun lenses are so dark the attenuated light reveals the issue, while it is...
There's less light entering the retina, so comparing and contrasting a clear pair to a sunglass pair the optics aren't going to be as good especially...
All our lens availability guides from a variety of manufacturers treat the sph as the max available power. The cyl tends to just be the max cylinder...