To avoid damage

The 51 × 29 mm lenses provide broad coverage while maintaining a lightweight feel for extended outdoor wear

Frame width about 5 1/2 inches (140mm)

Temple length about 5 5/16 inches(135mm)

Lens height about 1 1/8 inches (29mm)

Round Bifocal Blue Light Blocking Readers Nighttime DSS005 feed-color-Black/Red/Transparent To avoid damageAcrylic lens, plastic frame with spring hinges Block 98% blue light, serious color distortion Frame width about 5 5 16 inches(135mm) Lens width about 1 7 8 inches (48mm) Lens height about 1 11 16 inches (43mm) Bridge (DBL) about 9 16 inches (15mm) Temple length about 5 1 2 inches (140mm) 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