Do Sunglasses Need Regular Lens Change?
Do sunglasses need regular lens replacement? Do sunglasses need regular lens replacement?In the outdoors we often wear sunglasses to protect glasses, sunglasses time for a long time can be aging, do not need to change lenses regularly？We all know that nearsighted glasses usually need regular lens replacement, but what about sunglasses ?Maybe a lot of people don't care about these details.Some people don't need to change their lenses if they don't break.
But we must change the lenses regularly, because it is very important for our eyes.
Sunglasses lenses need to be replaced regularly. Prolong exposure to the sun will reduce UV protection and degrade the function of your sunglasses lenses. The lenses may become light, discolored and brittle.If not replaced for a long time, it is easy to cause corneal damage and vision problems.Sunglasses wear the longer lens also presbyopia, lens of the film layer will be oxidized, a pair of sunglasses "shelf life" in about 2 years, "expired" after, sunglasses are likely to lose its eye protection effect.
Reasons for wearing sunglasses:
Eye experts suggest that sunglasses must be worn frequently to protect your eyes;This is because our eyeballs (lenses) absorb UV rays very easily, and the damage from UV rays has two distinctive characteristics:
1. The damage of ultraviolet rays will accumulate.Because ultraviolet light is invisible light, it is difficult for people to feel intuitively.
2, UV damage to the eyes is irreversible, that is, irreparable.For example, cataract surgery can only be performed with an artificial lens.Long-term exposure to the eye can lead to damage to the cornea and retina, clouding the lens and leading to cataracts, which can lead to permanent vision damage.
How to care for sunglasses?
1, the new purchase of sunglasses to be adjusted by the staff, wear comfortable after leaving.Please fold the left foot of the lens before retracting.
2, when wearing glasses, please hold the mirror feet with both hands, facing out.
3. When not in use, wrap the lens with polishing cloth and put it in a special bag to prevent the lens and frame from being scratched by hard objects or squeezed for a long time.
4. Dust, sweat, grease, cosmetics and other stains on the frames or lenses, please clean them with neutral detergent and warm water, and then blot them dry with a soft cloth.
5. It is forbidden to dip in water or soak in water for a long time and to be exposed to the sun in a fixed place;Do not place on current or metal edge for a long time.
6. Panel sunglasses may be slightly deformed after a period of use or use for a period of time, which is a normal phenomenon and is determined by the property of the sheet material.Can be adjusted to the sales store shelf can be restored as new.
