1, because you are low vision and the ophthalmologist can not do anything, you feel desperate? When you see the ophthalmologist, he or she may tell you that your eye disease is hopeless, please do not be overly disappointed, please come to the low vision clinic, there may be a last chance to improve your vision and get rehabilitation. 2.What is a vision aid? Hearing aids can enable people with poor hearing to hear sounds that they could not hear, while vision aids can enable people with low vision to see clearly what they could not see or could not see. Therefore, any device or equipment that can improve the vision of patients with visual disabilities is called a visual aid. 3.What are the commonly used visual aids? There are two major categories of commonly used visual aids, namely optical and non-optical visual aids. (1) Optical visual aids: It is the use of convex lenses or the magnifying effect of the optical system, so that patients with visual disabilities can see small objects that were not clear to become larger, so they can see or see clearly. For example, a handheld magnifying glass. (2) Non-optical visual aids: Instead of using the magnifying effect of a convex lens or optical system, the patient’s vision is improved by changing the surrounding environment. For example, increased lighting, large-size newspapers, magazines, etc. 4.What is a distance vision aid? In daily life, study or work often need to see far, such as students in indoor class to look at the blackboard, watch TV, in the store to see the goods; in the outdoor to see the tram and car stop signs, etc.. People with low vision often need to use visual aids to see the above-mentioned distant targets, and such aids are called distance visual aids. Distant vision aids are actually various types of telescopes. Commonly used are bifocals and monocular finger ring type portable vision aids. The main disadvantage of the distant vision aid is the small field of view, so it is very difficult to walk with it on. 5.What is a near vision aid? A near vision aid is a sight aid used by low vision patients when they look close. For example, a person cannot read a newspaper and therefore needs the help of a near vision aid. Commonly used near vision aids are handheld magnifiers. 6, with a light source of hand-held visual aids Many patients like to use near glasses type visual aids to read, glasses visual aids shape and ordinary presbyopic glasses are not much different, but this kind of visual aids than the presbyopic glasses high degree, can be magnified 2 to 6 times. The disadvantage is that when using it to look closer, the greater the magnification, the closer the distance to see. 7, high-tech applications in vision rehabilitation – electronic vision aids Electronic vision aids is an electronic graphic magnification device, is the text read, pictures and other items observed through the camera lens, the image will be transmitted to the screen and be magnified. It can be used to read books and newspapers, write letters, draw pictures, do students’ homework, etc. It can be linked to a computer and perform various computer operations. The advantages of electronic visual aids: (1) high magnification (2) large field of view: both eyes used to read, you can play the role of two eyes, a more complete field of view (3) can have a normal reading distance and comfortable reading posture (4) can have the image reversal change: for example, you can adjust to black on white or white on black. (5) Can adjust the contrast and brightness 8.Can the visual aid replace the function of the normal eye? Although the use of visual aids to see near and far has greatly improved the conditions of patients’ life, study and work. However, vision aids cannot replace the function of the normal eye, because every kind of vision aid has its advantages and disadvantages. 9.Will wearing a visual aid damage the residual vision of patients with low vision? In general, low vision patients with stable eye disease or the majority of congenital eye disease do not develop eye disease. Therefore, for such patients, the reasonable use of residual vision, whether with or without a visual aid, will not cause damage to the eye, let alone further loss of residual vision. If there is a loss of vision, it may be related to other eye diseases and not to the use of vision and whether or not to wear a visual aid.