12 April 2014
Posted in Pearls in Ophthalmology
By Brooke Strickland
This study, named the Multi-Ethnic Pediatric Eye Disease Study, was a cross sectional, population-based study that sought to determine the sex-and ethnicity-specific prevalence in color vision deficiency (CVD) for preschool age children that were Asian, black, Hispanic, or non-Hispanic white. There were a total of 5,960 kids included in the study, with ages ranging from 30 to 72 months old. A total of 4,177 were able to complete color vision testing (1265 black, 812 Asian, 1280 Hispanic, and 820 non-Hispanic white). To gather data, the children were tested using a color- vision-testing-made-easy color plate. Then, diagnostic confirmatory testing was done using Waggoner HRR Diagnostic Test color plates. They looked for prevalence of CVD in relation to age, ethnicity, and gender.
Results showed testability was 17% in children that were less than 37 months of age. It then increased to 57% for kids that were 37 to 48 months, then 89% in children 49 to 60 months of age, and 98% in children 61 to 72 months of age. The prevalence of CVD among boys was 1.4% for black, 3.1% for Asian, 2.6% for Hispanic, and 5.6% for non-Hispanic white children; the prevalence in girls was 0.0% to 0.5% for all ethnicities. The ethnic difference in CVD was statistically significant between black and non-Hispanic white children and between Hispanic and non-Hispanic white children. Most CVD cases for male children were either deutan (51%) or protan (34%), 32% were classified as mild, 15% as moderate, and 41% as severe. (1)
What to take away from the study: By age four, testability for CVD in preschool age kids is high. CVD incidences for preschool boys are different for each ethnicity, but the highest prevalence appears to be for non-Hispanic white children. Black children have the lowest occurrences of CVD.
1. Xie, John, Z., MD, PhD, Hornoch-Tarczy, Kristina, MD, DPhil, Lin, Jess, MS, Cotter, Susan, A., OD, MS, Torres, Mina, MS, Varma, Rohit, MD, MPH, Multi-Ethnic Pediatric Eye Disease Study Group. “Color Vision Deficiency in Preschool Children: The Multi-Ethnic Pediatric Eye Disease Study.” Ophthalmology. Published online April 3, 2014. Accessed April 5, 2014. http://www.aaojournal.org/article/S0161-6420%2814%2900049-9/abstract
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