RT Journal Article
A1 Harvey, Erin M.
A1 Dobson, Velma
A1 Miller, Joseph M.
A1 Schwiegerling, Jim
A1 Clifford-Donaldson, Candice E.
A1 Green, Tina K.
A1 Messer, Dawn H.
T1 Prevalence of Corneal Astigmatism in Tohono O'odham Native American Children 6 Months to 8 Years of Age
JF Investigative Ophthalmology & Visual Science
JO Invest. Ophthalmol. Vis. Sci.
YR 2011
DO 10.1167/iovs.10-6061
VO 52
IS 7
SP 4350
OP 4355
SN 1552-5783
AB    To describe the prevalence of corneal astigmatism in infants and young children who are members of a Native American tribe with a high prevalence of refractive astigmatism.    The prevalence of corneal astigmatism was assessed by obtaining infant keratometer (IK4) measurements from 1235 Tohono O'odham children, aged 6 months to 8 years.    The prevalence of corneal astigmatism >2.00 D was lower in the 1- to <2-year-old age group when compared with all other age groups, except the 6- to <7-year-old group. The magnitude of mean corneal astigmatism was significantly lower in the 1- to <2-year age group than in the 5- to <6-, 6- to <7-, and 7- to <8-year age groups. Corneal astigmatism was with-the-rule (WTR) in 91.4% of astigmatic children (≥1.00 D).    The prevalence and mean amount of corneal astigmatism were higher than reported in non–Native American populations. Mean astigmatism increased from 1.43 D in 1-year-olds to nearly 2.00 D by school age.  
RD 4/19/2021
UL https://doi.org/10.1167/iovs.10-6061