Cross sectional studies of corneal and astigmatic characteristics of children between the twenty-fourth and seventy-second months of life.
D000367:Age Factors; D001251:Astigmatism / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D003315:Cornea / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D012029:Refraction, Ocular; D012737:Sex Factors; D013223:Statistics as Topic