EYEphd provides you a variery of glasses such as anti blue light glasses, progressive multifocus reading glasses and photochromism sunglasses.If your eyes have special diopter, please do not hesitate to tell us for customized glasses.What is progressive multifocus reading glasses?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.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.A pair of progresswive multifocus reading glasses simultaneously meets the use of distance, near-use and intermediate distances.After you wearing EYEphd anti blue light glasses, you will feel:No dry eyes during long time working with electronic screens.No headache after all day long office working.Some adviceBecause the pupil distance for mass production is 62mm(±1mm). If you are not sure about your diopter and pupil distance between your eye balls. Please do not place the order.If you bought the wrong glasses n my store, please do not hesitate to tell us and provide us the latest optometry data. We would like to arrange a replacement for you.