Deputy Director of National Standardization Technical Committee, Director of Ophthalmology, China Engineering Institute of Metrology Department, optical experts Wang Liru reminds consumers, qualified fake Oakley sunglasses should be capable of recognizing traffic lights of different colors, cheap price and attractive appearance is not the only factor to consider, there are many points you should know.
In summer and highland areas, people often wear cheap Oakley sunglasses to protect themselves from glare and prevent ultraviolet rays from damaging the eyes. With the improvement of living standard, people are now attaching greater importance on their eyes. Ultraviolet rays are most harmful to the eyes under the sun. Ultraviolet rays make up about 7% of the sun’s rays that reach the earth’s surface. The cornea and lens of the human eye are the most susceptible to UV damage. Cataracts are the most common ophthalmic diseases associated with ultraviolet radiation. Ocular diseases such as sun keratitis, corneal endothelial damage, macular degeneration, and retinitis, etc. are related to ultraviolet radiation. Qualified sunglasses have the function of blocking ultraviolet and infrared rays. In other word, sunglasses are one of the effective means to protect the eyes from UV damage in summer.
Sunglasses are generally fall into light and dark colors, composed of a variety of colors. To evaluate the quality of foakley sunglasses, we should focus on several technical indicators including the assessment of focimeter and prism, transmittance properties, surface quality and internal defects, assembly accuracy and shaping requirements.
A pair of good quality fake Oakleys can play the role of shading and decorating. But in the market, the actual situation turn out not so. Some unscrupulous traders take the advantage of consumers not fully understand sunglasses, as a result, they use inferior material, low priced window glass or other inferior materials to make. These materials has poor uniformity, including stripes, bubbles and other impurities, it surly cannot block ultraviolet light and does not meet the physiological requirements of the human eye. What’s worse, they use low quality plastic film with low transmittance and high transmittance of ultraviolet light to make sunglasses, which, as you can imagine, are of great harm to consumers.
UV damage to the eye
(1) The harm of ultraviolet rays to the eyes cannot be ignored.
Late spring and early summer are good season for sunscreen cosmetics. Ultraviolet light in the sun causes skin damage, water loss, and aging acceleration. But if the eye is not properly protected, UV damage will be more serious. Intense or prolonged exposure to the sun causes damage to the cornea, lens and retina, and increases the incidence of cataracts and other visual problems. Therefore, wearing sunglasses is necessary to protect the eyes. Wearing foakleys sometimes can be indispensible: a pair of good sunglasses should be able to cut off ultraviolet rays at first, and then avoid UV rays into the eyes, next shade the sun.
Knockoff Oakleys are not a patent for summer: the ultraviolet rays are always there, but it just stronger in summer. Attention should always be paid to both skin sunscreen and eye protection.