Which of the following is NOT a primary method to use a telescope for near work?

• A. Adjust the tube length
• B. Change the objective lens power
• C. Add a reading cap
• D. Patient wears an ADD power

Answer: (B)

When using a telescope for near work, the goal is to bring the near target into focus with comfortable magnification. You can adjust focus by moving the eyepiece or altering tube length so the image forms at the near working distance. A reading cap adds close-up magnification to the eyepiece, making near tasks like reading easier. Adding an ADD power to the patient’s prescription provides extra near magnification without changing the instrument. Changing the objective lens power would require swapping the objective and recalibrating the entire setup, which is not a quick or typical method for near tasks.