The ultimate goal of glasses is clear, comfortable, and durable. The basis for achieving these is 1. Accurate optometry prescription includes not only myopia, astigmatism, astigmatism axis position, hyperopia, and presbyopia, but also pupil distance and pupil height. Some personalized lenses also need accurate data such as lens distance, front angle, face curvature, etc. The prescription contains not only the accuracy of these data but also the use time and frequency of glasses. 2. Appropriate lenses include the refractive index of the lens, whether the functional type is multifocal, discoloration, etc. 3. Comfortable frame is the most involved aspect of consumers, including the size, weight, style, and material of the frame.