The director of ophthalmology of the General Hospital of the Three Armies said that the cause of macular degeneration can be said to be hereditary macular degeneration, or related to eye trauma, high myopia, infection and inflammation, but "age-related macular degeneration" still accounts for the majority, about 70%, which is related to aging. Most senile macular vision is blurred. Because the initial symptoms are similar to presbyopia or cataract, it is easy to be ignored and delay treatment. According to the report of the World Health Organization 200 1, age-related macular degeneration has surpassed the previous number one cataract, which has become the main cause of poor vision, and ranks as the three major killers that harm the eyesight of the elderly, along with diabetic retinopathy and glaucoma. Therefore, early prevention and control becomes particularly important.
In addition, with the increase of age, retinal pigment epithelial cells will accumulate brown lipid, which is a metabolic waste. When retinal pigment epithelial cells absorb blue light, the blue light will react with A2E molecules containing lipofuscin, which will trigger the formation of free radicals. These free radicals will lead to the degeneration of retinal pigment epithelial cells. When cells die, they can't provide enough nutrition for photoreceptor cells, which will lead to visual impairment, which is called "macular degeneration". He also said that although blue light can damage the macula of retina, human natural lens can filter blue light, but if the intraocular lens replaced by cataract patients can't block blue light after lens replacement surgery, it is very likely that the macula of retina will be damaged by blue light.
The new treatment method in the world is to surpass the treatment level of cataract, and simulate the blue light filtering ability of natural intraocular lens through yellow intraocular lens, so as to protect the macular part of retina and reduce the threat of visual damage caused by this disease to China people.
At the inaugural meeting of Hangzhou Optical Chamber of Commerce on May 26th, we heard the latest eye health concept of international ophthalmology: preventing blue light injury. Zhongsheng (Hangzhou) Optical Co., Ltd., a wholly-owned American enterprise, made its debut at the meeting with its new series of "blue light protection" glasses. As we all know, ultraviolet rays do great harm to eyes, and consumers also know that they should use anti-ultraviolet sunglasses to protect their eyes. So is visible light harmless to the eyes? After long-term research, scientists have recently found that short-wave visible light, that is, violet light and blue light, also has a great destructive effect on the fundus retina, which is called "blue light damage phenomenon" by western ophthalmology. So how does blue light hurt our eyes? According to Dr. Zhou Qingshan, president of Zhongsheng Company in the United States, the retinal cells of the eyes contain an abnormal retinoid called A2E, which has two absorption peaks, one in the ultraviolet region of 335 nm and the other in the blue region of 435 nm. The toxicity of A2E to retinal pigment epithelium is greatly increased under light conditions. The damage of blue light is a chain reaction, which first causes the death of photoreceptor cells, then causes macular degeneration, and then leads to the gradual decline or even complete loss of vision. Western population surveys show that 20% of all people over 65 suffer from age-related macular degeneration, which has almost become an ophthalmic epidemic. The development of macular degeneration is relatively slow, and it takes more than ten years, which also gives us a chance to prevent it. Therefore, ophthalmologists remind you to wear glasses with the function of filtering ultraviolet rays and blue light before outdoor activities and screens on sunny days. Only in the last two years have scientists discovered the harm of blue light to the eyes, so the glasses on the market can only filter ultraviolet rays, and there are no glasses that filter blue light. Zhongsheng (Hangzhou) Optics Co., Ltd., founded by Zhongsheng in China, combined with the University of Southern California, Medellin Biomedical Equipment Company and the Optometry Research Center of the Ministry of Health of China, integrated the latest achievements of optometry, and applied 65,438+05 patents owned by the United States and China to the manufacture of lenses and reflectors. This time, the first batch of patented products-anti-blue light injury series glasses, mainly including flat glasses, safe driving glasses day and night, healthy sunglasses, 6699 reading glasses and so on. As soon as Zhongsheng series of patented new products appeared at the press conference, the Hangzhou glasses retailers who attended the conference were extremely excited. They like new products with selling points best, and they are local products, so they can enjoy regional advantages in service and price. Yang Fuliang, the purchasing manager of Hangzhou Daguangming Optical Store, said, "I am most optimistic about Zhongsheng Pingshu glasses, which have the functions of preventing blue light and radiation, and will definitely be welcomed by consumers who like to stay in front of the screen. Nowadays, more and more popular video products such as computers, televisions and game consoles bring us wonderful and efficient work and life, but also deeply hurt our eyes. The artificial light "light pollution" produced by it has become the number one culprit of juvenile myopia. Wearing protective glasses when facing the screen can play a good preventive role. " Zhou, secretary-general of Hangzhou Glasses Chamber of Commerce, believes that there are 300 million myopia patients in China, and more than one billion non-myopia patients are paying more and more attention to eye health. The market potential of plain glasses mainly for protection, treatment and decoration is huge. It is reported that Zhongsheng's patented blue-light protective glasses will be put on shelves in Hangzhou in early June, and during the Eye-Love Day on June 6, Zhongsheng Company will also launch a series of social welfare activities, and welcome Hangzhou citizens to participate.