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Wenzhou Wanrun Glasses Manufacturer Tells You Why Glasses Deformation May Cause Discomfort

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Wenzhou Wanrun Glasses Factory tells you the mirror angle: the angle formed by the left and right lens planes. Usually 170-180 degrees. Front inclination angle: the angle between the plane line and the vertical line of the lens, also known as the inclination angle. The normal binocular anteversion is consistent, generally 8-15 degrees. Body leg inclination: the angle between the single mirror leg and the vertical line of the lens plane. The difference between normal bilateral body leg inclinations does not exceed 2.5 degrees. The tilt angle of the mirror frame can be changed by adjusting the tilt angle of the body and legs.

External angle: refers to the included angle between the connecting line of two hinge axes and the mirror leg when the mirror leg is fully extended, generally 80-100 degrees. Lens distance: the distance between the back vertex of the lens and the front vertex of the cornea is generally 10-12mm. Bending and sagging length: refers to the distance from the bending point of the mirror leg to the tail end of the mirror leg. Stipule angle: including anterior angle, apex angle and bevel angle, which can reflect the position of nasal support. The position of the bracket can be adjusted to make it more closely fit with the bridge of the nose.

After knowing the above parameters, what problems will the deformation of the spectacle frame bring to the wearer? Rear view mirror angle dizziness and eye fatigue. Front inclination: too large or too small front inclination will lead to prism effect of the wearer's vision, causing discomfort. Too high or too low position of glasses: it will make people's vision unable to see things through the optical center, which is prone to eye fatigue and other symptoms.

Horizontal tilt of glasses: It is easy to cause the eyes to be unable to see things through a uniform vertical position. It is easy to cause visual fatigue, compensatory head position and other symptoms. The external angle is too large or too small: the external angle is too small, resulting in too tight wear, and the mirror leg compresses the temporal nerve, leaving a mark; The outer corner is too large, the glasses are unstable and easy to slide down. Lens distance: The change of lens distance will change the effective mirror degree. If it is too large, it may reduce the definition of myopia; Too small, may cause flashing eyelashes contact lenses, become greasy.

The bending point of the mirror leg is too long or too short: the bending point of the mirror leg should coincide with the point on the ear. If it is too short, there will be a sense of pressure behind the ears. If it is too long, the glasses will fall off. Asymmetrical surface of the stipule: one side of the stipule locally compresses the bridge of the nose, or one side does not contact the bridge of the nose, affecting the comfort of wearing glasses. Deformation of the mirror frame will cause many problems. How do you ensure that you wear the right frame?

The installation of glasses is a delicate work, even if the diopter test results and optical center distance are accurate, for example, the shape of the lens frame is inconsistent when the glasses are fixed. If it meets the requirements, it will also deviate from the quantitative parameters of the optometry prescription to a large extent. Therefore, when each piece of qualified glasses is delivered to the customer, the hospital staff will adjust the face shape and head size to make the wearer feel comfortable.

Secondly, in the daily process of wearing glasses, wear glasses with both hands, and put them into the glasses box when not wearing glasses, so as to avoid damage or deformation of the lens frame caused by accident or external force. After Z, it is recommended to adjust the glasses regularly after a period of use; If the glasses are deformed, do not adjust them by yourself. It is recommended to go to a professional ophthalmic hospital or the ophthalmic adjustment mirror library. The articles are from the network. If there is infringement or violation, please contact us to delete them. 文章来源于网络，如有侵权或违规，请联系我们进行删改。

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