<prompt> True regarding retinoscopy are all of the following except: September 2009Helps in estimating the condition of the refractionUsually performed at 1 m distanceConsists of a plane and a concave mirrorHyperopes display an against movement  <response>: Ans. D: Hyperopes display an against movement Retinoscopy is used in determining a patients refractive error. It is usually performed at a distance of lm or at an arms length 23rd of a metre. Mirror retinoscope Priestley-Smith has a plane mirror at one end and a concave mirror at other end. Power corresponding to the working distance is subtracted from the gross retinoscopy value to give the patients refractive condition. Myopes display an against reflex, which means that the direction of movement of light observed from the retina is a different direction to that in which the light beam is swept. Hyperopes display a with movement, which means that the direction of movement of light observed from the retina is the same as that in which the light beam is swept 