The sunglasses have become full-fledged fashion accessories, but do not forget their goal: protect the eyes. How to choose sunglasses? Here are a few tips!
The approach of the summer period, it is recommended to take all necessary precautions to protect his eyes, but also those of the children of the Sun. The‘National Association for improving the eyesight (ASNAV) delivers practical tips for choosing quality sunglasses to protect the retina and cornea of UV rays.
- Rule # 1: choose the category of sunglasses
First and foremost, it is recommended to choose a category of sunglasses for his business. Filter glasses of category 2 are not recommended to those who wish to spend their holidays by the sea or in a sunny area. However, they agree as protection in the city when the brightness is reduced.Category 3 is ideal for “normal” conditions of sunshine, while category 4 is intended for trips in the high mountains or at sea. Note, motorists are advised to never use glasses of category 4 when they get behind the wheel as this index of solar filter alters the vision and the perception of color.
- Opt for glasses that filter the blue light
Responsible for serious damage to the retina and the development of the related macular degeneration at the age (AMD), the blue light is particularly present in the light of the day, especially when the weather is clear. Glasses designed melanin-based filter perfectly this blue light. If in doubt, individuals can ask their optician who will guide them in the choice of their solar.
- The polarizing lenses for driving
If motorists have to ban wearing glasses of category 4 when they lead, they are however encouraged to wear polarized glasses. According to the Asnav, “when sunlight reflects on a flat surface like the road, the hood or the windshield, she undergoes after reflection, a modification of its radiation. She is said to be polarized. Become extremely bright, it causes very strong discomfort and alters the perception of contrasts and the relief.” Polarizing glasses are used to filter this disturbing light to improve comfort and the Visual quality of the drivers.
- The protection of the eyes of children
Unlike adults, children’s eyes have no natural protection against the risk of eye damage caused by UV light. The retinas of infants less than a year is, for example, reached by 90% of UVA and more than 50% of the UVB. Children must wear sunglasses filter categorized when they are on the slopes, at the edge of the water, under a parasol or sitting in the grass. The eyes of children must be protected as soon as they are exposed to UV reverberation.
- Focus on quality to gadgets lenses
Even if they are less expensive and more trends, “gadgets” glasses provide no protection. Most quality lenses, including available at opticians, have an index of filtration, treatment and protection against blue light by antireflection. Moreover, the glasses must filter UV 100% for optimum protection.