Blindness is a condition where a person has little to no vision. It can be caused by various factors, including genetic conditions, eye injuries, or diseases such as glaucoma and cataracts. People who are blind may rely on other senses, like hearing and touch, to navigate their environment and perform daily activities. There are different types of blindness. Some individuals may have partial blindness, meaning they can see some light or shapes, while others may be completely blind. Assistive technologies, such as braille and screen readers, help blind individuals access information and communicate effectively, enhancing their independence and quality of life.