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Match the data that myopia glasses needs!

Views:5     Author:Site Editor     Publish Time: 2020-12-12      Origin:Site

Match the data that myopia glasses needs!

1. What data is needed for matching glasses?

(1) In the absence of astigmatism: right eye degree, left eye degree, pupil distance is ok.

(2) Astigmatism needs: right eye degree, right eye astigmatism degree, right eye axis, left eye degree, left eye axis, pupil distance.


2. How to obtain optometry data?

If you don't have these data, you can go to your local optician shop or professional eye hospital to get an optometry. After the optometry, the optometrist should hand-write a list of glasses.


3. What is pupil distance?

Pupil distance is the distance between two pupils.The purpose of pupil distance measurement is to make the optical center distance of the lens consistent with the pupil distance of the two eyes, so as to make the user comfortable to wear. Otherwise, prism effect will occur, and users will experience visual fatigue, dizziness, nausea and other symptoms.


4. What is astigmatism?

Astigmatism, an abnormal refractive condition of the eye, is related to the curvature of the cornea.The human eye is not perfect. Some people's corneas are curved in certain angular areas, while others are flat.Astigmatism is caused by the uneven thickness of the cornea or the uneven curvature of the cornea, so that the corneal meridian flexion rate is not consistent, so that the light through these meridians can not concentrate at the same focus.In this way, light does not focus accurately on the retina to form a clear image, a situation known as astigmatism.

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