Objective methods for checking the refractive error are all except

Ans. is 'a' i.e., Ophthalmoscopy The procedure of determining and correcting refractive errors is termed as refraction. The refraction comprises two complementary methods : ? A) Objective methods : Objective methods of refraction include :- (i) Retinoscopy, (ii) Refractometry, (iii) Keratometry. B) Subjective methods : These are :- (i) Subjective verification of refraction, (ii) Subjective refining of refraction, (iii) Subjective binocular balancing.