What is multi focus reading glasses?

Progressive 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. 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. When go down stairs, please lower your glasses and use the top area. You’ll feel safe and comfortable.