GKFix MCQ Question

If an optician prescribes a lens with power -1.5 D, what does this indicate?

• A. A convex lens with a focal length of +66.7 cm
• B. A concave lens with a focal length of approximately -66.7 cm
• C. A convex lens with a focal length of -66.7 cm
• D. A concave lens with a focal length of +66.7 cm