Some advice from MEDOLONG STORE
1.You are not sure about your diopter and pupil distance between your eye balls. Please do not place the order.
2.If you have special pupil distance, please send us message for customizationn glasses. Because the pupil distance for mass production is 63mm(±2mm).
3. All in all, when you purchase the glasses, please make sure the correct optometry data including the diopter of your eyes and distance between your eye balls. Or if you bought the wrong glasses in 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.