The normal visual acuity of human eyes is generally above 1.0, and 0.3 is considered by the ophthalmology community to be the low limit to ensure that people can live comfortably. If the best vision of both eyes is still below 0.3 even after surgery, medication and correction by ordinary glasses, the quality of life will be seriously affected and there will be difficulties in seeing far (e.g. watching TV, reading street signs) or near (e.g. reading newspapers, writing). For this reason, the World Health Organization defines low vision as having best corrected visual acuity in both eyes within 0.3 light perception or a visual field radius of less than 10. Low vision is a state of low visual function, not a specific eye disease, and any eye disease can lead to impaired vision that is not reversible. Low vision seriously affects the patient’s ability to live and work independently on a daily basis, causing great inconvenience to themselves and their families. Therefore, many people with low vision worry that their eyes are “blind” and useless. However, experience has shown us that most people with low vision can or may be able to use their residual vision to organize or perform a job if they are supported by appropriate low vision rehabilitation efforts. Low vision and blindness are two very different concepts. Blindness means that the eye cannot even perceive light, i.e., there is no sense of light. The rehabilitation measures for low vision patients include: 1) treatment of the original disease; 2) fitting of visual aids; 3) training in the use of visual aids; 4) training in functional vision; 5) psychological rehabilitation and social support. Currently, we can perform low vision rehabilitation including detailed eye examinations, visual function assessments, fitting of various types of visual aids, and appropriate visual function training, and providing advice and guidance on certain living or working environments to ensure maximum mobility and participation in life and work. A visual aid is any device or equipment that improves or enhances the vision and mobility of a person with low vision. The use of appropriate visual aids is the primary means of low vision rehabilitation, and approximately 50-70% of people with low vision can rely on visual aids to improve their vision. Types of vision aids include: 1. Optical vision aids: including distance and near vision aids. Distant, such as binoculars (optional for the elderly to watch TV), monocular binoculars (students look at the blackboard in class or go out to find the stop sign, road signs); Nearby, such as various types of handheld magnifying glasses, glasses type vision aids, near and far binoculars, etc. 2, electronic visual aids: through electronic devices will be transmitted to the data image on the display screen and can be magnified up to 60 times, with it can read books and newspapers, writing, drawing, can be connected to the computer, a variety of computer operations. 3.Other vision aids: including glare glasses and non-visual aids such as laser canes, guide dogs, etc. We hope that through our joint efforts, more people with low vision can regain clear vision, carry out independent living, learning and working, and improve the quality of survival.