Designed for solving red/green colorblindness problems as well as color vision disorder and color weakness. Suitable for most squre size frame.Color blindness is not a singular condition. It encompasses a range of conditions, from mild to severe, that can cause each person to see color differently. glasses are designed to improve color vision of people with forms of anomalous trichromacy, which are estimated to comprise four out of five cases of color blindness. The most common types are Protanomaly and Deuteranomaly, which are forms of partial red-green color blindness.This color correction glasses can help you with your red/green colorblindness problems as well as color vision disorder and color weakness so that you can see this beautiful world you have missed out.This makes a great and unique gift for people who have red green blindness that help them experience a life changing event.