Do your homework when you wear eyeglass mart
- Optometry
Optometry is the most important part of optometry, which directly affects the comfort of the wearer. The computer refraction sheet can not be used as a direct lens parameter, and must be inserted and tried. To the optometrist after the adjustment of the handwritten optometry list shall prevail! Data such as pupil distance, myopia, astigmatism and axial position should be found on the optometry sheet.
- Select a frame
High myopia frame three options:
Large frame not selected, thin frame not selected,
Too thin leg is not selected
Small friends with small pupil distance should also choose a small box
- Frame material
Preferred pure titanium, B titanium and materials light, good toughness TR material selection of adjustable nose bracket, more convenient and do not slide;
Alloy, stainless steel carefully selected, easy to corrosion rust part of the people will appear metal allergy phenomenon
- Choose lenses
We choose the lens must understand the brand, series, function of the lens.
Low budget can choose Mingyue and Kemi;
In the budget, you can choose Daming and Essilu membrane; For a high budget, you can choose Zeiss New Qing Rui, Zerui and customized Zhirui
- Select the refractive index
On the issue of refractive index, many small partners do not know how to choose.
After all, the higher the refractive index, the more expensive the price. How to choose more reasonable?
According to the degree and the size of the frame to comprehensive judgment. Don't overpay.
0-200 degrees 1.56 refractive index 200-400 degrees 1.60 refractive index
The refractive index is 1.67 at 400-600 degrees
> The refractive index is 1.74 at 600 degrees
