<prompt> Methods to measure error of refraction are all except-RetinoscopyRefractometryKeratometryBinocular balancing  <response>: 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 