They are not blind, they are low-visioned.
Avoidable hardship is, therefore, commonplace.
Using low-vision aids will not damage your vision. Like conventional vision aids, such as eyeglasses, low-vision aids enhance vision but do not affect the physical health of the eye. Most low-visioned people will not lose their sight completely. It rarely is. When people become low-visioned, their worst fear is that they will forever be helplessly dependent.