Why Not Prescribe a Higher Power for Better Visual Acuity?

The VA goal while looking through the telescope is generally accepted to be 20/40 (6/12) (0.5) as it is usually adequate for virtually all visual activities.

If we prescribe a higher power telescope to achieve a better visual acuity it will be at the expense of a narrower field of view through the telescope and there will also be a greater demand for the wearer to keep their head still to stabilize the image. So, while it’s not unreasonable to consider a higher telescope power to achieve better visual acuity, it may make adaptation to the telescope more challenging for the patient.