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Are You The Target User of Progressive Lenses



Since the birth of the progressive film, people seem to have seen the life-saving straw. Most of us just remember that it could help us look far and near easily, but completely ignore the taboos of the progressive lenses and the applicable crowd. Today, let's take a look at the target users and taboos of it. 👇👇

Three Types of Target Users:


😄 The people over 45 years old have a long history of wearing glasses and they also have requirements for continuous use of near, medium and far vision. Far-distance light ≤ ± 6.00DS, astigmatism ≤ ± 2.00DC, vertical stagger ≤ ± 2. 00D. The most important point is to have a long history of wearing glasses. Patients who wear glasses for a long time have long been accustomed to the aberrations caused by glasses. Those who don't have a history of wearing glasses have discomfort even wearing flat glasses. For example, with multifocal glasses, they are even more uncomfortable.
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😄 Adolescents: Adolescents increase their myopia by more than -1.00D per year. They hope to control and delay the development of myopia. It is proved that the speed of myopia deepening will be controlled or delayed after these patients use multifocal glasses. 

😄 Refractive error status: single light ≤ ± 8.00DS astigmatism ≤ ± 2. 00DC vertical anisometropia ≤ ± 2. 00D. 

Six Types of People Out of the Zone :


😭Since the near-field of the progressive lenses are lower than the position of the conventional multi-focal lenses, it is necessary to move the head position so that both eyes enter the reading area, hence the person who cannot move the head position at will is not suitable for wearing. 
Including: lameness, short neck, short, cervical spondylitis patients, shoulder arthritis patients, spinal disease patients, patients with spinal curvature.

😭 People with motor system disorders, poor balance (such as motion sickness, seasickness, or similar vertigo symptoms) and inner ear dysfunction are also not suitable for wearing progressive lenses, especially when fitting rigid designs of progressive lenses. .

😭 People who need near vision when looking up are not suitable, such as book administrators, pilots, and hydropower workers.
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People who need far vision when looking down are not suitable, such as construction workers.

😭The binocular diopter spherical power is greater than 2D and the effective cylindrical lens is greater than 2D, especially when it is in the vertical direction (horizontal axis) is not suitable for wearing a progressive mirror.

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😭People with high ametropia, strabismus, amblyopia, anisometropia, PD less than 58cm are not suitable to use it. Besides, people with flat nose, nervousness, hypertension, motion sickness, heart disease, short neck, high visual acuity and medium and short range vision are also not suitable to use. At last, people over 70  years old include too.

Thank you for reading!💓💓
https://www.zinff.com/

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评论

  1. Unknown2018年8月14日 00:08

    Do you know that not all people are suitable to wear progressive lenses?

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