Methods to measure error 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 binocular balancing--a process sometimes known as 'equalizing the accommodative effo' or 'equalization of vision'. This allows both eyes to have the retinal image simultaneously in focus. Reference : A K KHURANA OPHTALMOLOGY, Edition4 ,Page-557