PT - JOURNAL ARTICLE AU - J. Atkinson AU - O. J. Braddick AU - K. Durden AU - P. G. Watson AU - S. Atkinson TI - Screening for refractive errors in 6-9 month old infants by photorefraction. AID - 10.1136/bjo.68.2.105 DP - 1984 Feb 01 TA - British Journal of Ophthalmology PG - 105--112 VI - 68 IP - 2 4099 - http://bjo.bmj.com/content/68/2/105.short 4100 - http://bjo.bmj.com/content/68/2/105.full SO - Br J Ophthalmol1984 Feb 01; 68 AB - The method of isotropic photorefraction has been used in a trial of refractive screening of 6-9 month old infants. Data are presented on the calibration of the method against retinoscopic measurements and its reliability. In photorefractive screening of 1096 infants under cyclopentolate cycloplegia 5% were found to be hypermetropic (over +3.5 D), 4.5% myopic, and 1.3% anisometropic (over 1 D). These refractive errors were confirmed on retinoscopic follow-up (with the exception of a few anisometropes). Follow-up of controls shows that one small refractive error was missed in 52 infants. We conclude that photorefraction is a valid and practical screening technique. Longitudinal study of infants with refractive errors will assess the value of early detection, in particular for prediction and prevention of strabismus.