Spent eyeglasses may have an impact on your vision as it affects the clarity of your vision, tends to cause visual fatigue, and can even lead to further vision loss. The function of eyeglasses is to correct the eye’s ability to see things, such as the concave lens worn for myopia, through which parallel light rays converging into the eye are dispersed and then transmitted into the eye to help see things clearly. If the glasses are damaged due to scratching, grinding and other damage to the flower, damage to a smaller, lighter area, may only consciously have a sense of blocking, the damage is serious, there may also be ghosting, diplopia, when the vision will be blurred. After the glasses are spent, it is recommended to replace them in time, if it is a group of minors, wearing spent glasses for a long time may cause or aggravate refractive error. You should also pay attention to the daily maintenance of glasses, when the lens is dirty, you can use special glasses cloth to wipe, when not in use should be put in the glasses case. It is recommended to replace the spectacles in time after they are spent, and to go to the hospital as soon as possible for examination and re-lens when the vision is affected.