Due to the difference between different monitors

and daily activities less comfortable while reducing viewing clarity

Lens height about 1 7/16inches (36mm)

Lens height about 1 13/16 inches (46mm)

Lens height: 1 1/8" (29mm)

4 Pack Chic Progressive Multifocus Reading Glasses M2108 Sunglasses Due to the difference betweenAcrylic lens, plastic frame with spring hinges Frame width about 5 7 16 inches (138mm) Lens width about 1 7 8 inches (48mm) Lens height about 1 9 16 inches (40mm) Bridge(DBL) about 1 2 inches (12mm) Temple length about 5 5 16 inches (135mm) EYEKEEPER ONLINE PROGRESSIVE MULTIFOCUS GLASSES 5 layer anti reflective coating to minimize glare from screens and fluorescent lighting. Not only for looking far, but also for computer and looking close. (Up degree