PURPOSE: 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. METHODS: 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. RESULTS: 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). CONCLUSIONS: 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.
PURPOSE: 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. METHODS: 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. RESULTS: 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). CONCLUSIONS: 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.
Authors: Erin M Harvey; Velma Dobson; Candice E Clifford-Donaldson; Tina K Green; Dawn H Messer; Joseph M Miller Journal: Optom Vis Sci Date: 2010-06 Impact factor: 1.973
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Authors: Rupal L Shah; Qing Li; Wanting Zhao; Milly S Tedja; J Willem L Tideman; Anthony P Khawaja; Qiao Fan; Seyhan Yazar; Katie M Williams; Virginie J M Verhoeven; Jing Xie; Ya Xing Wang; Moritz Hess; Stefan Nickels; Karl J Lackner; Olavi Pärssinen; Juho Wedenoja; Ginevra Biino; Maria Pina Concas; André Uitterlinden; Fernando Rivadeneira; Vincent W V Jaddoe; Pirro G Hysi; Xueling Sim; Nicholas Tan; Yih-Chung Tham; Sonoko Sensaki; Albert Hofman; Johannes R Vingerling; Jost B Jonas; Paul Mitchell; Christopher J Hammond; René Höhn; Paul N Baird; Tien-Yin Wong; Chinfsg-Yu Cheng; Yik Ying Teo; David A Mackey; Cathy Williams; Seang-Mei Saw; Caroline C W Klaver; Jeremy A Guggenheim; Joan E Bailey-Wilson Journal: Mol Vis Date: 2018-02-05 Impact factor: 2.367