With the aging of our population, the number of cataracts is increasing. Cataracts have become the primary cause of blindness in China, accounting for about half of the total number of blindness, and mainly include such types as senile cataracts, congenital cataracts, traumatic cataracts and metabolic cataracts. Age-related cataracts are the most prevalent type of cataract, and their incidence generally increases with age. Cataract is fundamentally a clouding of the intraocular lens. Any factors affecting the intraocular environment, such as aging and physical and chemical damage, can cloud the lens. The most obvious symptom is a painless loss of vision, characterized by less vision in bright light than in low light instead, and cataracts are not difficult to diagnose. Cataracts seriously affect the quality of life of patients and cause more pain and mental stress than any disability. Fortunately, with the advancement of medical technology, many breakthroughs have been made in the treatment of senile cataracts, and the blindness caused by cataracts has become a curable blindness. Modern surgical treatment of senile cataracts has shifted from simple blindness prevention to the level of continuous improvement of the visual quality and quality of life of the elderly. However, many people still have many outdated perceptions and misconceptions about the treatment of cataracts. The first misconception is that surgery can only be done when you can’t see. Some people believe that surgery can only be performed when they are completely blind, i.e. when the cataract is mature, which is obviously a misconception. This is obviously a misconception. Not only will cataracts cause serious complications such as secondary glaucoma and uveitis in the process of maturation, but overripe cataracts are usually accompanied by super hard cloudy nuclei and loose or fragile crystal suspensory ligaments, which can easily cause serious complications during surgery and bring unnecessary risks to postoperative vision recovery. With the application of small incision ultrasound technology and collapsible IOLs, surgery is possible as long as the visual acuity is below 0.3 and affects work and life, and at this time the surgical incision is small, less painful, less complications, faster recovery, and better quality of postoperative vision. The second misconception is the excessive belief in the effectiveness of drug treatment. Cataract treatment can be divided into two kinds of treatment: medication and surgery. In some early stage cataract patients, the development of the disease may be slowed down and the vision may be improved after medication. However, this is not necessarily the result of drug treatment, because the early progression to maturity of cataract is a long process, and it is possible for it to stop naturally at a certain stage of development without seriously affecting vision. Although many kinds of anti-cataract drugs are still widely used in clinical practice worldwide, none of them has very precise efficacy. It is now recognized that the primary treatment for cataracts is ultimately surgery. The use of medication will only delay the best treatment time. It is recommended that you listen to your doctor and seek medical consultation and early surgical treatment once the vision loss is severe so as not to delay the condition. The third misconception is that people in their eighties are too old and there is no need for surgery. Some people think that they are too old to suffer from the pain of surgery or that surgery is too dangerous to be performed. In fact, the current advanced cataract surgery has basically broken through the age limit, from a hundred-year-old man to a 3-month-old child, all can be operated and have successful experience. Therefore, there is no need to let the elderly spend their days in the dark, which will not only deprive them of quality of life in their later years but also bring serious burden to their families and society. The fourth misconception is that systemic diseases such as diabetes, hypertension and coronary heart disease cannot be operated on. Some elderly people with diabetes, hypertension and heart disease can tolerate the surgery as long as their blood sugar, blood pressure and heart function are controlled within a relatively normal range through medical treatment. At present, many hospitals carry out cataract ultrasound emulsification, which is performed through small incisions in the transparent cornea after cataract ultrasound emulsification and implantation of collapsible IOLs, resulting in short operation time and little pain for patients. The fifth misconception is that the vision can be improved after cataract surgery, and that if the vision does not improve after surgery, the surgery is a failure. We say that the eye is like a precision camera, and cataract is like a problem with the lens of the camera, which can be replaced through surgery. But a camera can take clear pictures not only with the lens, but also with the film and so on. In addition to cataracts, some elderly people also have macular degeneration or other fundus diseases, which are like problems with the film of a camera. For these patients, even if they have cataract surgery (lens replacement), their vision may not necessarily improve after surgery due to problems with the fundus (problems with the film). This means that for these patients with fundus or optic nerve disease, a successful cataract surgery does not guarantee satisfactory post-operative vision for the patient. In addition, 10%-20% of the patients who undergo cataract surgery will experience a second loss of vision soon after surgery, and it is found that the postoperative clouding of the capsule lining the IOL affects their vision. This is one of the most common complications after cataract surgery and is a worldwide problem that has not yet been completely solved. But even if it occurs, we can still get good vision again with laser treatment without surgery.