Blue Light Blocking Anti-fatigue Eyewear Anti Blue Light Progressive Multifocus Reading Glasses-RG73 MEDOLONG STORE 100% SATISFACTION GUARANTEE For any reason,if you want to return the eyewear within 30days, we'll be happy to refund you. We offer a 100% money back guarantee on all purchase. Style Number:RG73 Department:men/women Frame Material: polycarbonate Temples Material: polycarbonate Lenses Material:CR39(anti blue light lens)/PC(normal lens) The Dimension:frame(134*49mm) lens(49*41mm) bridge(15mm) arm(137mm) Note: To avoid damage, never clean your reading glasses with paper towels or clothing or alcohol, and also avoid using household detergents or soaps. While a few mild soaps don't harm lenses, today's extra strength soaps are powerful enough to slowly disintegrate lens coatings. PACKAGE INCLUDED 1*glasses 1*fiber cloth 1*fiber pouch 1*Thank you card Shipping Weight: 1.8 ounces (View shipping rates and policies) Asymptotic multifocal glasses are the upper optical area of the lens used to look far and the lower optical area used to look near. The degree of the middle gradually change, which used to look at the intermediate area.We change the curvature of the lens surface from top to bottom, adding positive diopter, which result in the effect of visual correction.Most people wear progressive multifocal glasses need about a week of adaptation, but the adaptation period varies from person to person, walk slower when feel dizzy.As the two sides of the lens is astigmatism disorder district, you need to turn around the neck and eyes in order to see objects on your both sides clearly. When go down stairs, please lower your glasses and use the top area. You'll feel safe and comfortable.All-round anti-blue lenses will absorb all the 380nm UV absorption, and then absorb 400-500nm high-energy blue light, block the harmful light outside the eyes, protecting the eyes from damage. While the 500-780nm of the dominant light to maintain the transmission rate of 90% or more, to ensure that vision as clear as possible.All-round anti-blue lenses are suitable for regular use of computers and phones. The people who often use the computers, phones and ipad touch the electronic screen for a long time, therefore they will be in the blue light for a long time. As a result, protection is essential.Many fashion people like wearing glasses frame, but it is nothing when in face of ultraviolet radiation or indoor computers and phones, so a pair of anti-blue lenses will be more secure. View more great items On Jun-12-18 at 20:42:20 PDT, seller added the following information: