The Importance of Proper Eyeglass Use

Types of lenses and what they do:

Myopic lenses are concave lenses, thin in the center and thick at the edges, the higher the prescription, the thicker the edges, which can be used to obtain a clear image by moving the focus back to the retina. Farsighted or presbyopic lenses are convex lenses, thick in the center with thin edges, which are used to obtain a clear image by moving the focus forward onto the retina.

Higher refractive index lenses are thinner and more suitable for high prescription eyeglass users, reducing the weight of eyeglasses and improving aesthetics and comfort.

Resin lenses are lightweight and unbreakable, but less resistant to abrasion and are suitable for rimless, half-rim and full-rim eyeglasses. Glass lenses, on the other hand, are heavy and fragile, but have good abrasion resistance and are usually used only for full-frame eyeglasses.

 

Selection and identification of frames:

Alloy frames are cheap and versatile, titanium frames are lightweight and expensive. Plate frames are strong but slightly heavier, TR90 frames are lightweight and moderately priced.

Observe whether the welding of the frame is firm, whether the plating is smooth, whether there is any defect on the surface, whether the shape is flat, these are important factors to judge the merits of the frame.

Different frame materials and styles are suitable for different occupations and occasions, such as metal frames for formal and plate frames for casual.

 

Additional features of eyeglasses:

UV-protective sunglasses protect the eyes from UV rays, which can be harmful with poor quality sunglasses.

Anti-blue light eyewear reduces retinal damage from short-wave blue light, which is especially important for people who are constantly exposed to electronic screens.

 

In summary, selecting the right eyeglasses involves the choice of lenses and frames, the accuracy of the optometry and prescription, and the daily wear and care. Understanding this knowledge can help people to better choose and use eyeglasses, thus protecting and preserving their vision.