It's great in relieving visual discomfort and fatigue when working or gaming on computer for a long time

but also for computer and looking close

Anti-Splash

EYEKEEPER POLARIZED CLIP ON SUNGLASSES: Registered Sunglasses and Eyewear

plastic frame with spring hinges

Bifocal Sunglasses with Wood Temples for Women SGH001-6 Color:Black Tortoise It's great in relieving visualPlastic and Wood frame with spring hinges Frame width about 5 1 2 inches (140mm) Lens width about 2 1 16 inches (53mm) Lens height about 1 3 4 inches (44mm) Bridge (DBL) about 3 8 inches (10mm) Temple length about 5 11 16 inches (145mm) EYEKEEPER BIFOCAL SUNGLASSES A crescent shape on the bottom part of the lenses have magnification, which is for reading and close up work. And the other parts of the lenses have no magnification,which is for distance