Answer:
A person can have physical sight but no "vision" in the sense of lacking the ability to see beyond the immediate or to think about the future in a meaningful way. This may be due to a lack of imagination or creativity, or it may be the result of a cognitive or neurological condition that impairs the ability to process and interpret visual information.
A person can have "vision" but no physical sight in the sense of having a clear, focused, and inspiring idea of what they want to achieve or where they want to go. This kind of "vision" may be based on intuition, inspiration, or a deep understanding of one's values and goals, and it may not be dependent on the ability to see with the physical eyes. For example, a blind person may have a strong "vision" for their future and be able to pursue their goals and dreams despite their lack of physical sight.