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Anonymous users2024-02-07Anzhao experience to the landlord to convert: if the clarity requirements are not high, if the clarity requirements are high, it is just a personal suggestion If you don't like it, don't spray.
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Anonymous users2024-02-061.Regular astigmatism.
BAI can be divided into DU according to the type of astigmatism and the degree of astigmatism
Different cylindrical corrections. Convex dao column mirror for farsighted astigmatism, concave column lens for myopic astigmatism.
Mild astigmatism does not need to be corrected if there are no clinical symptoms, and corrective glasses should also be worn if there is vision loss or symptoms of visual fatigue and visual interference.
Children, especially preschoolers, must adequately correct astigmatism to prevent the formation of amblyopia.
Before wearing, it should be refractioned, adolescents and children should be dilated refraction, and it can also be combined with the measurement of keratometer to understand the nature and degree of real astigmatism, and then combined with subjective audition, the prescription of glasses can be determined.
Patients with high astigmatism who cannot adapt to spectacles can be corrected with contact lenses.
2.Irregular astigmatism.
It is not easy to correct with lenses, and can be corrected with contact lenses.
3.Surgery. It is suitable for high astigmatism caused by congenital or acquired eye surgery such as cataract or corneal transplantation, such as excimer laser refractive corneal surgery, laser corneal thermoplasty, cornatotomy, etc.
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Anonymous users2024-02-05Hello: Your astigmatism is not recommended with invisible glasses.
If you must match, there is no conversion standard for astigmatism, and when refraction, add myopia to your myopia. It's not dizzy or rising!
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Anonymous users2024-02-04Don't understand your data. It feels like it should be. Myopic astigmatism in the left eye, (not +) Right eye: myopic astigmatism is not +).
If that's the case, then the conversion of the left eye is: about half of the astigmatism plus the degree of myopia) The effective spherical diameter is converted as: degrees, so with degrees.
Right eye: about half of astigmatism plus the degree of myopia).
The effective ball diameter is converted to degrees, so with degrees.
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Anonymous users2024-02-03Then you choose 775 + 100 2 = 825-75 = 750 degrees for the left eye, and 900 + 125 2 = 950-100 = 850 degrees for the right eye, and order according to this degree.
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Anonymous users2024-02-02If the astigmatism does not exceed 125 degrees, you can add half of the astigmatism to the myopia degree to adjust, you can go to the regular glasses online to see, the formula is written in detail.
Crypto glasses – not for everyone.
Invisible glasses, as the name suggests, are "stealth". It not only has the function of ordinary glasses to correct vision, but also relieves the inconvenience caused by glasses, so wearing hidden glasses has become a fashion for today's teenagers. However, contact lenses are not suitable for all people who need glasses, so who should not wear them? >>>More
There are those that are specifically for astigmatism, but they just need to be customized. >>>More
Amblyopia is generally farsighted astigmatism, or high myopic astigmatism, and the size of the astigmatism itself is also a problem. For some aesthetic needs, it can be worn properly, and the age must be at least 16 years old.
It is recommended that you do not wear contact glasses, because no matter what brand, how expensive, how good the advertisement is, it is medically impermeable, and the oxygen supply to the eye is almost entirely from the oxygen absorbed by the eye in contact with the outside world. Second, it has high requirements for hygiene, and it is easy to cause eye infections at every turn, but it is easy to be bad for the eyes. Third, with contact glasses, you need some eye drops, and now all eye drops are two, 80% of which contain preservatives. >>>More
It may be that you didn't wear it well when you wore it, and it hurt your eyes.