Optometric data
Accurate degree: Go to a professional eye institution or optician for optometry to obtain accurate myopia, farsightedness, astigmatism degree and axial position data. This is the ba...
The frame, as an important part of the glasses, not only carries the function of supporting the lens, but also an important carrier to show the wearer’s personal taste and style. In the marke...
What is cellulose acetate?
Cellulose acetate refers to a thermoplastic resin obtained by esterification with acetic acid as a solvent and acetic anhydride as an acetylating agent under the action o...
Material aspect
Look at the material composition: high-quality metal spectacle frames often use titanium alloy, pure titanium, etc., with light weight, high strength, corrosion resistance, anti-all...
Glass lens
Refraction: The refractive index of glass is high, generally between 1.5-1.9. This makes the glass lens have a strong ability to refract light and can more accurately control the directi...
Choosing a lens suitable for children requires a comprehensive consideration of children’s vision, eye habits, age and other factors. The following are some key points:
Select according to vi...
