The formula of red-green balance in optometry is to look at green first, then red and then green. Correcting the accuracy of corrective lenses: In the monocular test, use traffic light lenses to correct the lens degree to achieve the final accuracy. In the case of binocular separation, the left eye and the right eye observe the target through the red lens and the green lens respectively. If the visual clarity obtained by both eyes is the same, it shows that the visual experience of both eyes is balanced, and the glasses frame prepared with this data is also the most suitable.

Glasses:

Glasses are a combination of lenses and frames, which are used to improve vision, protect eyes or for decorative purposes. Glasses can correct a variety of vision problems, including myopia, hyperopia, astigmatism, presbyopia, strabismus or amblyopia. Glasses consist of lenses and frames. There are 15 kinds of myopia glasses, hyperopia glasses, reading glasses, astigmatism glasses, flat glasses, computer goggles, goggles, night vision goggles, goggles for e-sports games, sunglasses, toy glasses and sunglasses.