Optometry should be very familiar to myopic people, because you just need to get glasses whether frame glasses or contact lenses to go to the optometrist first in order to formulate, optometry is to check the myopia of your eyes, whether there is astigmatism, and the relevant pupil distance, etc.. If you don’t have astigmatism, the data given to you on the prescription is myopia and pupil distance; if you have astigmatism, the data given to you on the prescription is myopia, astigmatism, axis, and pupil distance. If you can read the prescription, you can keep track of the changes in your vision and prevent it from deteriorating. When you can’t read it, it will be too late to regret. We’ll teach you how to read the optometry order, now the eye store will not tell you, the general doctor also do not know much data. There are three kinds of common computerized optometry sheets: computerized optometry sheets, optician’s optometry sheets and hospital optometry sheets. Three kinds of format and write similar but there are differences, it is worth noting that the computerized optometry order can only be used as a reference basis and not as prescription data. In general, OD is commonly used in clinical practice to indicate the right eye, OS indicates the left eye, refractive error with D to indicate that 1.00D is usually said to be 100 degrees, then how to know it is myopic or farsighted, astigmatism lens? In this way, there are “+” for farsighted lenses, “-” for nearsighted lenses, “S” for spherical lenses, and “C” for cylindrical lenses. “C” indicates cylindrical lenses (that is, the amount of astigmatism), if the optometry order says OD + 2.00DS, it means that the right eye needs to wear 200 degrees of farsightedness, if it is -2.00DS then it is 200 degrees of myopia, if it is -2.00 DC is 200 myopic astigmatism, because astigmatism involves the axial problem, so in the astigmatism of the degree of the latter also write on the axial such as 90 degrees, 180 degrees, etc.. The axial direction is indicated by AX, the refractive problems of people do not happen to be pure myopia or hyperopia, many are mixed, so the lenses need to be nearsighted, farsighted, or astigmatism of the combination of tablets. pd represents the pupillary distance (the distance between the pupils of the two eyes mm), with the above knowledge, you can basically understand the optometry order. (Under the final prescription for glasses) DISP: Dispense the final prescription for glasses (the final determination of the number of glasses that the human eye needs to wear) From the above an optometry single, you can clearly understand the meaning of each data, and finally get the degree of our eyes, astigmatism, astigmatism axis orientation and pupil distance. However, computerized optometry is also a certain degree of error, can only be used as a reference, many opticians through the professional optometrist with optometric lenses to further verify, in order to come up with accurate data.