The human eye is like a camera, and the retinal choroid in the fundus is equivalent to the negative. The macula is an anatomical part of the fundus and is one of the key points closely related to our vision, once the macula is diseased, it will definitely affect our vision, leading to vision loss and visual distortion. The current medical level is not yet able to modify the “negative”, there is no technology to replace the retina, for example, macular degeneration and other fundus diseases, because the retina can not be transplanted, the means of treatment is still relatively limited, so macular degeneration is increasingly becoming the main cause of blindness. The common macular lesions include age-related macular degeneration, mesophoria, high myopia, etc. What is senile macular degeneration? Senile macular degeneration is also called age-related macular degeneration. Most of them start at the age of 50, and the older the age, the higher the prevalence. There is no significant relationship between the onset of the disease and gender and race. Both eyes are affected simultaneously or sequentially. The main symptoms are loss of central vision and black shadows in the center of the visual field, which may not occur in both eyes but may appear in the visual field when using one eye. Another is that the visual objects will be distorted, straight lines become curved, horizontal lines become wavy, etc., and otherwise beautiful images will look crooked. There is also a decrease in the contrast of seeing things, and instead of a bright, clear picture in front of the eyes, it becomes a gray, indistinguishable image. The more the patient tries to see, the less he can see there, but the afterglow of the eye is not affected, and there is no eye swelling or eye pain. The disease is a disease of both eyes, but one of the two eyes often develops first. Therefore, people over 40 years of age should have regular physical examinations to check the fundus, at home, cover one eye, observe the door frame, the edge of the table or Tagburn, etc., with Amsler table is better, self-examine whether there is a black shadow obscuring or visual distortion, and seek timely medical attention. The pathogenesis of this disease is not clear, risk factors include: 1, smoking; 2, obesity, hyperlipidemia; 3, partial diet, etc. Atrophic macular degeneration Atrophic macular degeneration, also known as dry macular degeneration, is characterized by progressive pigment epithelial atrophy. There are dense or fused vitreous warts and large light gray atrophic area with pigment disorder seen in the fundus of the eye. For patients with atrophic macular degeneration, we suggest to quit smoking; lose weight, lower blood lipids, eat less greasy food and maintain proper weight; advocate a balanced diet, eat more vegetables and fruits, such as more green leafy vegetables and deep sea fish; wear sunglasses when going out in the sun, and also supplement lutein and appropriate trace elements such as zinc. Exudative senile macular degeneration is also called wet macular degeneration and senile disciform macular degeneration. This type is characterized by active neovascularization under the pigment epithelium, which causes a series of exudative, hemorrhagic and scarring changes. In recent years, most scholars advocate early laser photocoagulation of the neovascularization to avoid deterioration of the disease. Argon laser can effectively close the subretinal neovascularization, but the common argon laser and krypton laser cannot be applied to the neovascularization under the central macular recess and the paracentral macular recess. Because the ordinary photocoagulation treatment applies the thermal effect of laser, which is non-selective and has effect on both normal and diseased tissues, the purpose of closing the neovascularization is achieved at the same time, the normal retina must be lost to form scar tissue, and patients will feel the formation of fixed black shadows in front of their eyes. At present, in China, the treatment method recognized and approved by the state is photodynamic therapy.