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.
This page provides all possible meanings and translations of the word trifocal lenses. Trifocal lenses. Trifocals, patented in 1827 by John Isaac Hawkins, are eyeglasses where the lenses have 3 regions to correct for distance, intermediate, and near vision. Trifocals are mostly used by people with advanced presbyopia who have been prescribed 2 diopters or more of reading addition.