After wearing myopia glasses for so many years, do you still not understand myopia prescription? When your child is short-sighted and you see a doctor,the doctor ask you explain the various data of the myopia prescription. As a parent, do you have a little bit of embarrassment? Don't worry, today I will teach you how to read the myopia prescription.
First we find an optometry sheet
The right eye and the left eye are usually represented by R and L respectively;
S: Indicates the spherical degree, which is the degree of myopia or hyperopia. The "+" before the number means farsightedness, and the "-" means nearsightedness.
C: Indicates the degree of astigmatism.
A: Indicates the axial direction of astigmatism, only when there is astigmatism.
Give an example
According to this myopia optometry list:
Myopia in the right eye is 125 degrees, combined astigmatism is 75 degrees, and the axis of astigmatism is 165 degrees;
Myopia in the left eye is 325 degrees, the combined astigmatism is 25 degrees, and the axis of astigmatism is 4 degrees.
After Changchun Aier Ophthalmology WeChat, many myopia patients consulted the editor, with this myopia prescription, can I go for glasses?
Of course not, because there may be errors in the computer optometry list, resulting in inaccurate test data.
Computer optometry ≠ medical optometry
Computer optometry is prone to many deviations in actual operation. Because the testee sits in front of the refractor for testing, and the instrument completes the whole process of operation in an instant, if the testee's nervousness fluctuates greatly, it may cause the eye diopter to rise instantaneously.
Moreover, due to improper operation or subjective cognition deviation during the operation of the optometrists, the optometry data may be inaccurate.
1. Ordinary optometry
Generally, it refers to the optometry in the optical shop, which mainly refers to allowing people with refractive errors to see objects clearly. According to the computer optometry to obtain the diopter, the operation method and steps are relatively simple. In this case, the measured degree is not particularly accurate, so some glasses friends will feel dizzy, nausea and other status quo when wearing new glasses.
2. Medical optometry
Medical optometry is to check the convergence of light after it enters the eyeball. It takes the emmetropic eye state as the standard to measure the degree of vergence difference between the inspected eye and the emmetropic eye. It is a scientific prescription based on more than a dozen diagnostic indicators such as the patient's eye examination, refractive status, eye position, accommodation, visual function, age, occupation, eye habits, etc., which is directly related to the accuracy of the glasses And comfort, it requires rich knowledge of medicine and optometry, the effect is not only to see objects clearly, but also to treat and protect the eyes, so that the eyes can enjoy clarity and comfort.
Secondly, the optometry process is different
1. Ordinary optometry
Measurement of uncorrected visual acuity - computer optometry - lens box test piece method.
2. Medical optometry
Measurement of uncorrected visual acuity—computer optometry—examination of dominant eye—examination of eye position (strabismus, phoria)—examination of accommodation and fusion ability—inspection of convergence and dilation ability—pupil dilation or comprehensive optometry—audition—prescribing.
[Summary] Ordinary optometry is only for the purpose of seeing clearly with the eyes. The inspection methods and equipment are relatively simple, and the requirements for operators are low. Ordinary optometry is only for the purpose of seeing clearly with the eyes. The inspection methods and equipment are relatively simple Low requirements for operators.
Medical optometry requires eye balance and coordination. Medical optometry has high requirements for optometry equipment and personnel, and the quality of its completion is closely related to the professional knowledge of the operator. Qualified medical optometry must not only see clearly, but also obtain lasting and comfortable reading results.
