What does Functionally Blind refer to regarding visual capability?

Functionally blind refers to individuals who have limited vision that significantly impacts their ability to perform daily activities and often leads to a reliance on other senses, such as touch and hearing, for navigation and comprehension of their environment. This status indicates that despite having some degree of visual capability, it is not sufficient for tasks that require clarity or extensive use of vision, such as reading standard print or recognizing faces at a distance. Those who are functionally blind may still possess some light perception or limited visual acuity but cannot utilize their vision effectively enough to engage in tasks that typically require normal vision. Thus, the focus is on the practical implications of their visual impairments rather than on their perception of color or the ability to see clearly.