How to understand the impact of optometry on opticulation

1. "Optometry" and "glasses" are two very important tasks in correcting refractive errors and customizing glasses, and they are also the two most important services provided by glasses operators to glasses users. From the perspective of general laws, "optometry" and "glasses" are two behavioral processes with different contents and closely related, and they are the two stages that must be possessed to achieve the purpose of scientific and reasonable refractive correction.

2. "Optometry" is the basis of "glasses".

The nature of "optometry" is to provide refractive testing services to the person being tested. The process of "optometry" is the qualitative and quantitative detection and analysis of the refractive status of the eye. The purpose of "optometry" is to obtain accurate test results

Refractive corrective lens and related data of the eye to be examined. According to the test results, a reasonable refractive correction plan was formulated based on the age, accommodative ability and physiological condition of binocular visual function of the subject. This is the most profound content that the optometrist writes on the optometry sheet.

It is the most general understanding to consider the data on the optometry sheet as the result of refraction. However, we should realize that these data are a further improvement of the refraction results, and they are refractive correction data that contains the concept of scientific correction.

This data is the basis for the dispensing of glasses. In this sense, optometry is the basis for scientific and rational refractive correction.

The influence of vision on glasses is very important, for example, if you don't have optometry, you can't know the prescription of glasses, and of course you can't match a good mirror.

Optometry is the examination of the eye with suspected refractive error to determine the degree of myopia, farsightedness, astigmatism, and refraction. Therefore, optometry is the premise of glasses, and glasses need to know the accurate refractive power of both eyes in order to choose a lens frame according to the result.

The quality of an optometry must have a great impact on the accessories, because after he has refraction correctly, you will wear this mirror, which is the right mirror for you.

When you go to the optician to get glasses, you must have an optometry, because only optometry will know if you have glasses. When running the polarization and power, so pay attention to the optometry pair glasses. is very important.

1People often hear the word "prescription glasses", but what does "prescription glasses" mean? It can be clearly said that "prescription glasses" is essentially a word formed by the combination of the words "optometry" and "prescription glasses".

How to understand the influence of light on glasses is mainly to see the influence of light on the overall eye homoluminescence, to refraction, to use the adjustment and change of the eye.

If you have glow-in-the-dark glasses, he has an impact on that lens, and it is mainly well, and the fatigue of the eyes should be considered clearly.

The impact of my departure from the sea and sunshine on the ban, if you want to be banned, you must do an optometry examination first, and then hire for the delicate situation.

If it doesn't affect it, I don't think there's a problem, there should be a more basic thing.

1. For optometry, it is best to go to the eye hospital for optometry, which is more professional, and the correctness of optometry data is very important for glasses.

2. If you go to the hospital for optometry, it is best to go early because you have to queue up. (Sorry, I'm not familiar with Shanghai local hospitals).

3. Before going to the hospital, you can consult the staff at the front desk to know the process and procedures of optometry.

4. Corrective vision is or, mainly depending on the specific situation of your eyes, and it is more appropriate to generally feel clear and comfortable.

5. At present, most of the types of lenses on the market are divided into two types, one is single-vision lenses and the other is progressive multi-vision lenses. Everything else is just accessibility. It is the refractive index, generally speaking, the higher the refractive index, the thinner and lighter the lens, and the more expensive it will be, but it does not mean that the thinner the better, the left and right can be.

6. If your eyes have myopia and astigmatism, it is best to wear ordinary glasses for your eyes.

7. To prevent the deepening of myopia, in addition to wearing a pair of glasses that suit you, you must develop good eye habits and don't let your eyes be overtired, which is the most important thing.

In fact, you don't need to go to the hospital for optometry, as long as it is a regular optical store, you can give you the vision you get is afraid that your prescription is too high, and you will be confused after the prescription If your prescription is more than 500, I recommend that you wear aspherical lenses It can be nearly half thinner than the resin sheet It looks beautiful and comfortable to wear Because aspherical lenses should not be deformed If you think the price is too high, you can choose the lenses Anyway, the lenses used will be thick if the prescription is high.

Hello, optometry is recommended to go to the ophthalmology department of a professional hospital for a comprehensive vision examination. In general, the formal optometry process is mainly as follows:

Step 1: Consultation; Mainly understand the attributes of myopia, the actual situation of eye use and past medical history;

Step 2 Diagnosis of old mirrors; Understand the use of old glasses and the problems that are in**;

Step 3 Computerized optometry; The computer optometry data will be high, and it can only be used as reference data (many unprofessional optometrists end here);

Step 4 Insert refraction; Will wear a try-on frame and then look at the E-type**; Be patient and try it on for a while, and remember to walk around to see how far and near;

Step 5 Prescription for optometry; A complete optometry list includes: myopia and hyperopia in both eyes and interpupillary distance in both eyes; If there is astigmatism, there should also be astigmatism power and axis position;

Medical optometry is a complete set of optometry processes based on comprehensive optometry. Because the effects of visual function are taken into account, the resulting prescription is more suitable for the individual's situation and the glasses are more comfortable to wear. In the case of ordinary optometry, the prescription is mainly obtained through the computer refractor, and the prescription is determined by try-on, and the error is large.

With specialized instruments, it can be easily done in a few minutes.

Well, hello! 30 astigmatism, there should be no such thing, or 25, or 50, but under normal circumstances, 25 astigmatism can be directly ignored, 50 astigmatism, depending on the situation, sometimes you can ignore it, but, look at you, after getting a 200 astigmatism, glasses used for a year, and now dilated pupils to look down, only 30 (let's take it as 30), in this way, because you have been using a pair of glasses that do not fit before, but due to a long time, you have slowly adapted, On the contrary, you can't adapt to the lens under the correct data, in this case, we can only try to get closer to the previous 200 and find an optimal power between 30 and 200 for you to use.

Pupil dilation is especially important, please confirm whether the place you go to has this qualification before dilating your pupils, otherwise it may affect your life!

Hope mine can help you!

The functions of mydriasis are:

1. Pseudomyopia caused by accommodative spasticity, once the pupils are dilated, the accommodative effect disappears, and the pseudomyopia recovers;

2. The adjustment effect of adolescent eyes is very strong, if the pupil is not dilated, the degree of refraction error is very large;

3. For eyes with astigmatism, the refraction power and the position of the astigmatism axis can be checked more accurately after pupil dilation;

4. The adjustment effect of farsightedness is also very strong, and it is best to dilate the pupil refraction. Because the results of dilated refraction are objective, the prescription of patients with amblyopia and mental retardation can be accurately determined.

Therefore, the visual acuity measured by optometry after general pupil dilation should actually be accurate, but if there is 30 degrees of astigmatism, it should not be unclear, does the landlord have myopia in addition to astigmatism?

Your statement doesn't seem to be quite right, because astigmatism generally does not have 30 degrees of astigmatism in the measurement data, and there is no 30 degree astigmatism lens, not to mention that there is no need for this astigmatism.

After the pupil is retracted, it is not necessarily 200 degrees or 300 degrees, because astigmatism has a certain conversion relationship with your spherical power, so the most important thing is that you feel comfortable after wearing glasses. Because optometrists pursue three criteria of time: clear vision, comfortable feeling, and long-lasting reading.

good luck

Personally, it is recommended to go to a professional eye hospital for mydriasis. It is very important to have good glasses.

Write both ends of the spherical mirror, write the cylindrical mirror in the opposite direction of the axis position (the axis of 90, the cross is written on 180), and then find the algebraic sum in all directions. We are used to writing your test as follows, spherical mirror is + cylindrical mirror is the axis position in the opposite direction of your cylindrical axis.

The coordinate formula and the way of handling are the same, but they are two expressions of one thing. Cross charts (coordinate formulas) are generally used for image detection.

I don't really understand, this is only known by professional opticians and doctors, and you should ask a professional.