Cheap Varifocals versus Superior Varifocals
- Varifocals have the distance prescription at the top of the lens, so when you’re looking straight ahead, things should be clear far away.
- There is a gradual change in the prescription from top to bottom of the lens, where your reading area is located.
- Because all these powers are blended together in the lens, there are distortions at the sides of the lenses, and only a central channel in the lens has clear vision.
