@article {Atkinson105, author = {J. Atkinson and O. J. Braddick and K. Durden and P. G. Watson and S. Atkinson}, title = {Screening for refractive errors in 6-9 month old infants by photorefraction.}, volume = {68}, number = {2}, pages = {105--112}, year = {1984}, doi = {10.1136/bjo.68.2.105}, publisher = {BMJ Publishing Group Ltd}, abstract = {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.}, issn = {0007-1161}, URL = {https://bjo.bmj.com/content/68/2/105}, eprint = {https://bjo.bmj.com/content/68/2/105.full.pdf}, journal = {British Journal of Ophthalmology} }