<prompt> Strongest cycloplegic is -AtropineHomatropineCyclopentolateTropicamide  <response>: Ans. is a i.e., Atropine Rough estimate of refractive error after retinoscopy:o Objectively a rough estimate of error of refraction is made by taking into account the retinoscopy findings and following deductions.i Deduction of 1D for 1 m and 1.5 D when retinoscopy is performed at 23rd m 67 cm distance.ii Deduction for cycloplegic 1D for atropine, 0.5D for homatropine, 0.75 D for cyclopentolate.Amount of refractive error Retinoscopic finding - deduction for distance - deduction for cycloplegic.o Maximum deduction is required for atropine as its the strongest cycloplegic. 