What is the primary purpose of a reverse telescope?

• A. Increase field of view
• B. Decrease field of view
• C. Provide better contrast
• D. Provide magnification

Answer: (A)

A reverse telescope is used to widen the visual field. By reversing a telescope, the eyepiece and objective are swapped, which lowers magnification (often near 1x) and expands the angular field that reaches the eye. This field-expanding effect helps someone with restricted vision—such as tunnel vision or severe peripheral loss—see more of the scene without needing large head turns. So the primary purpose is to increase the field of view.