Sunglasses Guide for Every Consumer

Sunglasses are used to shield your eyes against the ultraviolet ray. Ultraviolet ray can be divided into two types including ultraviolet A and B rays. The two types of ultraviolet rays have different frequencies and wave lengths. Human’s eye cornea can absorb most of the ultraviolet A and B rays. Ultraviolet A ray is responsible for causing cataract problem. When the cataract problem is serious, it will cause your eyes to develop macular degeneration disease. Macular degeneration disease is responsible for causing blindness in senior people aged 65 years old and older. If your eyes are exposed to the sunlight, they will suffer from cancer. Photokeratitis can also happen if your eyes are exposed to too much sunlight. If you want to avoid the side effects of ultraviolet ray, you can wear sunglasses. Every pair of sunglasses has a layer of ultraviolet coating to filter the ultraviolet ray.
Whenever you are outside, you must wear sunglasses to protect your eyes. If you have kids, you can buy sunglasses for them as well. Your kids need more protection from the ultraviolet ray. To ensure your sunglasses lasts for a long time, you should customize it with polycarbonate lens. Polycarbonate lens won’t break when subjected to a heavy impact. It is suitable for kids because they are careless. They move around a lot when they are playing.
If you suffer from vision problem, you should purchase prescription sunglasses. Prescription sunglasses are available for almost all prescriptions. You can customize your prescription sunglasses with bifocal or progressive lenses. If you want to wear sunglasses while you are swimming, you should purchase the prescription swimming goggle.
The appearances of prescription sunglasses are the same as non prescription sunglasses. Many celebrities wear designer prescription sunglasses. Some sunglasses have lots of curvatures. Sunglasses with extreme curvatures are not recommended because the curvatures will distort the vision. Wraparound sunglasses are examples of sunglasses with extreme curvatures. Many manufacturers produce wraparound sunglasses with few curvatures. However, wraparound sunglasses with lesser curves can only offer limited prescription ranges. Before shopping for sunglasses online, make sure you obtain a prescription from the local optician so that you can buy the right prescription sunglasses.