Methods to measure errors of refraction are all except: (A) Retinoscopy, (B) Refractometry, (C) Keratometry, (D) Binocular balancing
Answer is D. The final step in the subjective refraction is called "Binocular Balancing" - a process which is known as sometimes "Equalizing the accomodative effo" or "spherical equalization" This allows both eyes have the retinal image simultaneously in focus. Reference: AK khurana 7th edition