-What are progressive multifocal reading glasses? Progressive multifocal glasses are lenses where the upper optical area is used for distance viewing and the lower optical area is used for near viewing. Most people take about a week to adjust to wearing progressive multifocal glasses, but the adjustment period varies from person to person; walk more slowly when you feel dizzy. When going down stairs, please use the upper optical area, you will feel comfortable. This is a multi-focus goggle processed from safety glasses Features -Blue light blocking lens No more eye strain with your blue light glasses. Reduce eye fatigue and sensitivity to light when facing digital screens. Perfect for office workers or anyone who needs to look at screens all day. -Anti-fog lenses Indoor and outdoor, they dramatically reduce the possibility of fogging and ensure that your vision is not blocked -Multifocal lenses It has 3 different zones, a distant viewing zone for driving and walking and other long distance viewing needs, a transit zone best suited for computer work or to help you adapt to changes in the prescription of your glasses and a strong magnification zone best suited for reading and writing, using cell phones. safety readers progressive reaidng safety readers progressive reaidng safety readers safety readers style safety readers progressive reaidng safety readers progressive reaidng safety readers safety readers