Line of sight and Line of vision

Line of sight noun - An imaginary straight line along which an observer looks.

Line of vision is a synonym for line of sight in unobstructed path topic. In some cases you can use "Line of vision" instead a noun phrase "Line of sight".

Line of vision noun - An imaginary straight line along which an observer looks.

Line of sight is a synonym for line of vision in visual field topic. You can use "Line of sight" instead a noun phrase "Line of vision".