%0 Journal Article %A G. V. Catford %A A. Oliver %T Development of visual acuity %D 1973 %R 10.1136/adc.48.1.47 %J Archives of Disease in Childhood %P 47-50 %V 48 %N 1 %X A hand-held electrically operated instrument has been devised to assess visual acuity by means of the phenomenon of opto-kinetic fixation nystagmus. An accurate determination of visual acuity has been obtained from an early age, and a graph of the normal visual acuity development produced. It has been confirmed that adult acuity is reached by 3 years of age. %U https://adc.bmj.com/content/archdischild/48/1/47.full.pdf