To avoid damage

serious color distortion

While a few mild soaps don't harm lenses

Frame width about 5 1/4 inches (134mm)

Lens height about 1 inches (25mm)

Modern Bifocal Blue Light Blocking Reading Glasses DSSG1802 Magnification Strength:+2.00 To avoid damageAcrylic lens, metal frame with spring hinges Block 98% blue light, serious color distortion Frame width about 5 11 16 inches (145mm) Lens width about 2 3 8 inches (60mm) Lens height about 2 1 8 inches (54mm) Bridge (DBL) about 1 2 inch (13mm) Temple length about 5 1 4 inches (133mm) EYEKEEPER BIFOCAL GLASSES 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