Inappropriate or substandard eyeglasses will not only fail to correct vision, but will also aggravate vision loss, which is mostly irreversible, and the resulting damage is irreparable. As a general consumer, after all, it is impossible to understand and consider the knowledge of choosing eyeglass frames and lenses very comprehensively. Therefore, this article teaches you how to choose good glasses. 1, optometry is accurate, do not look at the store how luxurious, we must look at the optometrist has a “senior optometrist certificate” and above qualifications, the most assured is the hospital eye clinic or to go to a professional optometric organizations optometry (Note: children must be in the hospital eye clinic optometry). 2, choose the frame: the principle of light, not easy to deform, the best to try on, and then consider the pupil distance, face shape, frame style, color, material, weight and other factors. Of course, as a general consumer, after all, it is not possible to choose the knowledge of the spectacle frame to understand and consider a very comprehensive, so you can accept the guidance of the relevant professionals and try on the glasses, their own choice, glasses, if wearing deformation must be replaced in a timely manner. 3.Choice of lenses: This is the most common consumers do not understand, the National Optometric Key Laboratory of the market more than 30 kinds of lenses sampling, found that only 4 kinds of lenses are more ideal, can play a role in controlling myopia, of which 3 kinds of imported brands. Therefore, it is necessary to choose good quality and good reputation brand lenses. (Note: the lens is not only to quality qualified, must choose the lens center and lens peripheral degree consistent aspheric lenses) affect the quality of glasses is more complex factors, and the glasses of the consumer’s own factors are easy to be ignored. In fact, if consumers understand some basic knowledge about optometry, they can maximize the positive role of their own subjective initiative, so as to cooperate with eyeglasses dealers to ensure the smooth progress of the quality of the work, and minimize and avoid the emergence of some quality problems. The following is a detailed description: 1, first of all, must be more guaranteed by the hospital eye clinic or go to the optometric organization for optometry examination, if you know you have eye disease or suspected eye lesions must be examined by the hospital to see if there is any disease of the eyes and then for optometry examination. 2, optometry lens box, focal length meter and so on are the most basic and necessary measuring instruments in the optical store, they must be qualified by the national legal measurement institutions and in the validity of the results of the validity of the test can be used normally. Otherwise, there is no accurate measuring instruments value this premise, optometrists will be difficult to get accurate optometry data, optical store assembled glasses quality will be difficult to ensure. 3.Consumers should actively cooperate with optometrists to carry out optometry according to the relevant procedures, and avoid determining the relevant prescription parameters according to their own experience or estimation without experiencing optometry, and do not arbitrarily request to change the optometry prescription determined by the optometrist or request the optical dispensing store to order and dispense spectacles arbitrarily according to the technical parameters determined by themselves. 4, computerized optometry instrument with its optometric comfort, fast, convenient, intuitive display and other advantages and popular. Many consumers also tend to have a computerized optometry machine as an important factor in judging the grade of an optical store, in fact, this judgment is not comprehensive. In fact, the computerized optometry method can only be used as a reference method of optometry, and cannot directly issue a prescription based on it, not to mention the results of the printout of the optometry machine can not be used to directly replace the optometry prescription. After the computerized optometry must be in accordance with the reference data obtained and then make subjective comprehensive optometry instrument to check the optometry after the insertion of the test piece of wear near and look away for more than 15min. Finally, the optometrist will consider all the influencing factors to give a suitable optometric prescription. The quantitative accuracy of the prescription is the prerequisite and condition for the quality of prescription glasses, without which there is no way to talk about the quality of prescription glasses. Therefore, in this sense, the importance of accurate optometry prescription is not less than the importance of the quality of spectacles. 5. Eyeglass frames are the basic components of customized glasses. When choosing spectacle frames, in principle, you should choose frames that are light and not easy to deform, and then you should consider your pupil distance, face shape, frame style, color, material, weight and other factors. Of course, as a general consumer, after all, it is not possible to choose the knowledge of spectacle frames to understand and consider very comprehensive, so accept the guidance of the relevant professionals in the dispensing store and try on, consumers can also reduce the risk of unqualified frames by choosing the popular brands of genuine products. 6, eyeglass lenses are the core components of customized eyeglasses. National Optometric Key Laboratory on the market more than 30 kinds of lenses sampling, found that only 4 kinds of lenses are more ideal, can play a role in controlling myopia, of which 3 kinds or imported brands. Therefore, you should choose reputable branded lenses, such as the top-ranked brands recommended by the Optical Chamber of Commerce and the Quality Supervision Bureau. (Note: the lenses are not only qualified, but also aspheric lenses with the same number of lens centers and peripheral lenses) 7, for the assembled prescription glasses by the eyeglasses prescription workers in the lens focal length of the detection of the binding parameters of the lenses, it should be appropriate to check the quality of the assembly of the glasses: there is no obvious gap between the lenses and the lens ring, the lenses should not be loosened; the surface of the left and right lenses to keep the phase of the leveling; the two lens legs are opened and placed flat or inverted. Evenly keep flat, no distortion phenomenon of the frame, and so on. For half-frame (bottomless frame) eyeglasses, attention should be paid to the wire without friction or rupture phenomenon, the same position of the wire holes, and so on. For frame-less glasses, attention should be paid to the quality of the edge, screw fastening, screw cap is not damaged, and so on. At the same time, you should also know some common sense of the use of eyeglasses: such as generally do not put the convex side of the lens directly on the desktop or other rough surface of the object surface, in order to avoid accidental scratches and wear of the lens; take and wear eyeglasses with both hands, so as to avoid deformation of the frame and damage; wear glasses should be kept in the correct position, do not make the glasses hanging in the face of the drop type, to minimize the position difference between the pupil and optical center of the lens in the vertical direction; screws, screws, screws and screws should not be damaged. The position of the pupil and the optical center of the lens in the vertical direction should be minimized; the screws should be tightened in time when loosening, in order to avoid the emergence of some unnecessary problems such as lens falling off. 8, dispensing certificate is a valid certificate that shows the characteristics of the assembled glasses. First of all, it shows the store’s recognition of the act of assembling the glasses. Can appear in the future when the quality of doubt, relying on the technical supervision or other relevant administrative departments to properly help solve the problem, again, but the optometry and dispensing glasses is after all two independent procedures, optometry prescription is only optometry voucher, and can not indicate that the prescription issued by the optometry store must be dispensing glasses activities. Therefore, consumers must be careful not to use optometry to replace the prescription voucher. Finally, attention should also be paid to the optometrist’s requirements for regular review of vision, when the relevant parameters on the prescription changes, should be replaced in a timely manner with appropriate lenses or glasses.