Rehabilitation (literally, "becoming able again") aids patients in regaining physical, social, emotional, and spiritual independence, as well as improving their quality of life. Rehabilitation aims to enhance function and independence via adaptation rather than undoing or reversing the cause of harm. A medical rehabilitation to improve vision or low vision is known as vision rehabilitation (also known as vision rehab). In other words, it is the process of regaining functional capacity and increasing quality of life and independence in someone who has lost their vision due to disease or injury. Low vision rehabilitation allows optometrists to help their patients improve their function, independence, and general health.