high levels of ultraviolet light

As another summer, sunglasses again return. Eye care experts often ask the question of whether sunglasses are necessary, and it is really cheap and expensive type? The short answer is the two question in the affirmative.
In general, the sun light, especially by many units called wavelength. Each wavelength have different energy range from the red end of the low energy spectrum, the blue end of high energy. We hear so much ubiquitous UV adjacent to blue light, and has the highest and most dangerous energy. It is the wavelength of the light, we are most concerned about the damage to the eyes.
This high energy light to enter the eye, it is absorbed into the eye tissue. This energy, catalyst and then as tissue metabolism increased, that is when the trouble started. The severity of individual to macular degeneration with genetic susceptibility to expected increases rapidly and the disease, the disease incidence significantly ahead of schedule. Systemic diseases such as diabetes, also can put a person at the risk of confusion. In the natural lens eyes of Alfa protein, it is clear. When exposed to UV light, they undergo chemical change, convert it to a test protein is yellow. This process is called cataract and cataract formation results.
UV light is absorbed into the eyes of the outer layer will result in pinguecula and Pterygiua. These yellow bumps formed near in the cornea, the white part of the eye in the cornea and whitish growth, respectively. Both are caused by ultraviolet irradiation. More often find these abnormalities in individuals close to the equator on exposure to ultraviolet light is much higher, then the northerners.
Last, but certainly not the least important is skin cancer. The tissue around the eyes is a highly vascular very thin (many blood vessels) ideal locations for cancer. Two kinds of basal cell carcinoma and squamous cell carcinoma is due to excessive exposure to high levels of ultraviolet light.