For every pair of Foster Grant® glasses you buy, a pair of reading glasses will be donated through Giving Back to people in underserved communities around the world..Multi Focus™ reading glasses feature three strengths in one lens.
The bottom third has the highest strength (and the power you choose) for reading, the middle third has a slightly reduced magnification for computer use, and the top third has about half the strength of the bottom, for clarity when interacting with someone nearby (sitting across a desk, for example). Men's Rectangle Reading Glasses in Gunmetal by Foster Grant - Wes - +3..