How to choose the lens of sunglasses?

How to choose the lens of sunglasses?
The summer is coming, and the sun is too strong that many people are wondering how to choose a suitable pair of sunglasses?

1. UV resistance is the most basic requirement for choosing sunglasses. If the sunglasses are without this function, the light reflex will occur and the pupil will get hurt even more seriously.

2. The material is the most important factor for choosing the lenses (transmission rates), so you must choose optical materials such as PC or resin. There are many cheap sunglasses in the market that are made with acrylic lens (such as blue light filter). And this acrylic is the same material as the signs that we can see in our daily life. The transmission rate is only with a difference of 10%; in general, the consumer cannot find out the differences. However, this material is easier to make our eyes tired.

3. Regarding the color of sunglasses lens, we recommend gray, black, dark green, dark brown (brown), etc. The bright colors are not suitable for sunglasses, especially the blue lens. Lenses with yellow color increase the color contrast, which allows people to have a clear vision during a rapid movement. Therefore, this color is suitable for sportsmen, sportswomen and people who drive the car at night.

4. To be frankly, we recommend polarized sunglasses. Actually, polarized sunglasses have been sold more than 20% of total sales volume in foreign countries; whereas only 2% are sold in Taiwan.

5. To prevent the scratch, the lenses are better to be cleaned by the water first, and wipe with the tissue paper and soft cloth. Now the most popular lens is the mirror lens.

There are three types of Transitions in market

     a. Transitions 7th [stock and customization order]
        Usage suggestion: mostly used indoors and outdoors

     b. XTRActive [mainly by customization order]
       Usage suggestion: mostly used when during or outdoors

     c. DRIVEWEAR [mainly by customization order]
      Usage suggestion: mostly used when during or outdoors