FTN â **** the Navy. Commonly used as graffiti in hard to find places as a type of game. While there are no clear objectives, the result of upsetting officers constitutes a type of victory.
Bifocals, are eyeglasses with two distinct optical powers, Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
These are two of the different types of concentric bifocal pattern lenses for bifocal and multifocal lenses. The main vision disorder that multifocal and bifocal lenses are used for is presbyopia â a condition that happens as we age that affects our ability to focus on objects that are near.