This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.
To the Editor.—
The Denver Development Screening Test has elevated the humble raisin to prominence in establishing the visual development of an infant and his eye-hand coordination. The raisin is attractive to most small children but the fact that a child can see and pick up a raisin does not mean that he has normal vision.We recently "calibrated" a raisin to determine just how much vision a child needs in order to see one and pick it up. We were surprised to find that, presented on a neutral gray background at a distance of 14 inches, it requires only 20/2,000 vision to see a raisin well enough to find it.We would like to recommend to all pediatricians and those interested in the development of children that the ability of a child to find and grasp a raisin does not, therefore, indicate that he has normal vision.
Romano PE. The Raisin and Vision. JAMA. 1973;223(8):921. doi:10.1001/jama.1973.03220080051018