The term optometry is a household word. In the words of the common man, “a test to see if there is myopia, hyperopia and astigmatism.” Doctors use optometry to check whether the patient has refractive errors in the eyes, and then determine the next step in the diagnosis and treatment plan. It’s simple, but there’s actually a lot to be said for it. People who have been examined know that a “myopic eye”, if you wear -2.00D lenses, corrected vision can reach 1.0, then -2.25D, -2.50D, -2.75D, and -3.00D optometry lenses worn in front of the eyes, corrected vision can also reach 1.0, so these five different degrees of Which one should I use? Different optometry units may issue different optometry reports, which can easily cause confusion and medical disputes among patients. However, if medical optometry is used correctly, such conflicts will not arise. At present, the most common method of optometry is the insertion method, and the higher optometry technology will use the inspection mirror for objective optometry. Children need dilated optometry because of the strong adjustment, more convenient and computerized optometry, which can quickly tell the patient the approximate degree, but these optometry is not medical optometry. Medical optometry must be carried out as follows: 1, check the main eye is the right eye or left eye. 2, check the eye position, whether there is an internal or external oblique. 3, check the adjustment power, the strong adjustment power of the prescription to the positive direction, the weak adjustment power to the negative direction. 4.Both eyes must be adjusted to achieve balance. 5, deal with the pupil distance and reasonable trial lens. Not all optometrists can carry out medical optometry, must have a deep knowledge of clinical ophthalmology to do. Optometry must use high precision and high cost comprehensive optometry, and it takes a long time. Some people ask, if medical optometry is time-consuming and laborious, why should it be promoted? The answer is very clear: the purpose of conventional optometry is to see outside objects, while medical optometry is not only to see objects, but also to play a health care treatment of the eyes, the most common example is that it can treat visual fatigue, but also to reduce the discomfort after laser myopia surgery. Medical optometry and ordinary optometry difference: ordinary routine optometry, its purpose is only to let the refractive error to see objects, inspection methods and equipment is relatively simple, only the check shadow optometry, computerized optometry derived from refractive error, and then try on lenses and other processes. Medical optometry is quite rigorous and complex, not only the high requirements of optometry equipment, but also the content of the examination can not be achieved by ordinary optometry, in addition to accurate understanding of the basic data such as refractive error, astigmatism, axial position, etc., but also must be in accordance with the rigorous medical optometry process to check its adjustment, binocular vision balance, binocular monocular function, convergence collection function, identification of the dominant eye, etc., and finally integrated the above examination, issued a scientific Only after the prescription of optometry, can we effectively and accurately carry out medical prescription, to achieve the purpose of clear prescription and can read lasting and eye health care. In addition, an important purpose of medical optometry is that it must be examined by a professional ophthalmologist to exclude all eye diseases other than refractive error, especially glaucoma and other irrecoverable, insidious vision-killing eye diseases. Currently, all developed countries regard the prescription of glasses as a strict medical act, and the prescription of glasses must be medical optometry.