1. Low vision patients: Patients who are found to have a best corrected visual acuity between 0.05 and 0.3 can be defined as low vision patients. At this time, you need low vision rehabilitation treatment. 2.Common disorders that trigger low vision: diabetic retinopathy and age-related macular degeneration are most common in the elderly group; congenital cataract, amblyopia and retinopathy of prematurity are most common in the young group. 3.These are the times when you may need low vision rehabilitation services: difficulty in reading at close range despite wearing glasses, difficulty in recognizing familiar faces, difficulty in object recognition and the presence of possible hazards such as the risk of falling when walking up stairs and striding. 4. Low vision rehabilitation services: mainly to improve your visual function through vision aids, which is also the key to your independence and safety.