Ishihara test in 3- to 6-year-old children.
OBJECTIVE
To investigate the efficacy of a modified Ishihara color test in preschoolers.


METHODS
The Ishihara test was performed to screen 115 children 3 to 6 years of age for color vision deficiency. Children who could not read numbers were instructed to trace the shapes of the numbers and of colored winding lines on the test plates using a cotton-tipped applicator. The ability of the children to understand and complete the test was investigated.


RESULTS
The Ishihara test was satisfactorily taken by 96.5% of the 115 children. Two 3-year-olds and two 4-year-olds did not understand the test. Thirty-five percent of the 3-year-olds could not read numbers but successfully used the tracing method. Three of the 51 boys and none of the 64 girls were considered color deficient.


CONCLUSIONS
The modified Ishihara test was successfully performed by children aged 3 to 6.
Department of Ophthalmology, Korea Cancer Center Hospital, Seoul, Korea.
Sang Yul
SY
Choi
Jeong-Min
JM
Hwang
D002648:Child; D002675:Child, Preschool; D003118:Color Perception / Q000502:physiology; D003119:Color Perception Tests / Q000592:standards*; D003117:Color Vision Defects / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D011446:Prospective Studies; D015203:Reproducibility of Results