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This doctor's words are only half of what he says, or it may be that you only understand half of it, and wearing glasses is not only about the prescription, but also about the visual effect, such as whether you are studying or working? Do you sit before or after reading a book? When it comes to work, do you look more near or far?
Do I need to drive at night? These points also need to be understood, your current power is 100 degrees off each side, so what is your vision? If your original power of vision is or, and the reduction of power is also or, it is fine, but if your vision is only or after the power reduction, then it is not good, because too low vision makes your eyes unable to tighten and relax normally, which is a kind of damage to your eyes.
Shenzhen Deqing Glasses Senior Optometrist.
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My eyes are 475° and 500°, and my glasses are 375° and 400°, and I don't change them very often, almost once a year.
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Glasses with the right prescription are a must, the key is to follow the scientific wearing, wear glasses when you see far, and you don't need to wear glasses when you see close. The glasses themselves are only refractive correction, not the first means, to improve their own naked eye vision, control the development of power, must cooperate with effective means.
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The doctor who fitted glasses said that the prescription of glasses should be lower than the prescription of the eyes to avoid a rapid increase in the prescription of the eyes", did the doctor who said this help you to check the eye position or accommodative function? Do you have a hidden oblivion? If not, it's not good for the eyes!
The purpose of our glasses is to make the eyes able to see clearly, comfortably and durably after standardized optometry. If we are fitted with a pair of undercorrected myopia glasses (except for the neophoria), there will be a long-term blurred image on the retina, which will put the eye out of focus, which will promote the development of myopia.
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Generally, it is 500 degrees of myopia, and the farthest distance that can be seen with the naked eye is only 20 centimeters.
Logarithmic visual acuity, equivalent to decimal point vision, myopia is about the reciprocal of decimal point visual acuity multiplied by 100, called 250 degrees. Visual acuity is not completely consistent with myopia, because the intensity of eye accommodation is different, and the visual acuity should be 100 degrees or 300 degrees. To make a clear diagnosis, dilated refraction is required, and accurate myopia can be obtained by using cycloplegic agents, such as atropine eye drops or tobiamide eye drops, to paralyze the ciliary muscle and relieve the spasm of the ciliary muscle.
When the first myopia occurs, it is necessary to diagnose true or false myopia, it is recommended that you go to the optical center for examination, and then you can determine the degree of myopia, if you want to know how many degrees of ten centimeters of your eyes are, you must go to the hospital for dilated refraction, because it is difficult to infer a very accurate degree through this specific symptom, and it is difficult to infer a specific naked eye vision through a specific degree, so if you want to know how many degrees, you must go to the hospital for dilated eye refraction.
All the means of improving the patient's vision are called vision correction methods, and the common methods are:
1. Wear appropriate glasses.
2. Increase outdoor activities.
3. Use low-concentration drugs, such as atropine, etc.
4. Teenagers can choose to wear orthokeratology lenses (OK lenses).
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1. Different lens thicknesses: In the case of the same thickness of the lens center, the same material lens of the same power, the edge of the lens with a high refractive index is thinner than that of the lens with a low refractive index. The relative will be a little thinner.
2. Different refractive index: the higher the refractive index of the lens, the thinner and lighter the lens of the same power, and the more beautiful the glasses are. However, the higher the refractive index, the stronger the dispersion, and the lower the clarity of the lens image.
3. Spherical and aspherical surfaces are different: the spherical lens is definitely worse than the aspherical surface, especially the edge part of the field of vision, the field of view of the spherical lens is obviously curved, and the higher the power, the more obvious the effect. Most aspherical lenses on the market today are single-sided aspherical, not double-sided aspherical.
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No, the higher the prescription of glasses, the better. The prescription of glasses refers to the degree of correction of myopia or farsightedness in the correction of the mask, and the prescription is too high and cannot play a better correction effect of imitation Kai. It is more important to have the right prescription and wear glasses that suit your personal situation than to blindly increase the thickness of the object, so it is recommended that you have an eye examination and find a professional optometrist to choose the right glasses for you.
In addition, it is also necessary to pay attention to eye care, such as avoiding prolonged use of electronic devices and going out to contact sunlight more often, to slow down the rate of deterioration.
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Definitely not, the higher the power, the longer the eye axis, the greater the impact on the fundus, so myopia prevention and control is needed;
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If you want to have a high prescription, it is recommended that you increase your close-up habits.
Myopic people are afraid of bad habits of near eye use
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