Both categories 2 and 3 of sunglasses have their advantages and disadvantages, and it cannot be said which is better.

Firstly, Type 2 sunglasses refer to sunglasses that can block 99% of ultraviolet radiation. These sunglasses are suitable for general outdoor activities such as walking, shopping, driving, etc. It can not only prevent UV damage to the eyes, but also effectively reduce eye fatigue and visual interference. Type 2 sunglasses have a lighter color and are suitable for daytime use without affecting vision. In addition, the price of Type 2 sunglasses is relatively cheap and is the first choice for the general public to purchase.

Category 3 polarized sunglasses refer to those that can block 100% of ultraviolet radiation, resulting in better protective effects. Type 3 sunglasses have darker colors and are suitable for use in areas with strong sunlight, such as deserts, snowy mountains, and high altitudes. In addition, there are various colors for the three types of sunglasses, such as gray, brown, green, blue, etc., which can meet the needs of different people.

However, Type 3 sunglasses are not suitable for everyone to use. For some special populations, such as nearsightedness, farsightedness, etc., choosing Class 3 sunglasses may affect vision and cause discomfort.

In summary, choosing Type 2 or Type 3 sunglasses depends on individual circumstances. If used in daily life, it is recommended to choose Type 2 sunglasses, as their protective effect is sufficient and the price is relatively cheap. If you are engaging in outdoor activities or in areas with strong sunlight, you can choose Type 3 sunglasses, but you need to choose the color and style that suits you according to your own situation.