PURPOSE: To describe the prevalence of high astigmatism in infants and young children who are members of a Native American tribe with a high prevalence of astigmatism. METHODS: SureSight autorefraction measurements were obtained for 1461 Tohono O'odham children aged 6 months to 8 years. RESULTS: The prevalence of astigmatism >2.00 diopters was 30% in Tohono O'odham children during infancy (6 months to <1 year of age) and was 23 to 29% at ages 2 to 7 years. However, prevalence dipped to 14% in children 1 to <2 years of age. At all ages, axis of astigmatism was with-the-rule (plus cylinder axis 90 degrees +/- 30 degrees ) in at least 94% of cases. CONCLUSIONS: As in non-Native American populations, Tohono O'odham infants show a high prevalence of astigmatism, which decreases in the second year of life. However, the prevalence of high astigmatism in Tohono O'odham children increases by age 2 to <3 years to a level near that seen in infancy and remains at that level until at least age 8 years. Longitudinal data are needed to determine whether the increase in high astigmatism after infancy occurs in infants who had astigmatism as infants or is due to the development of high astigmatism in children who did not show astigmatism during infancy.
PURPOSE: To describe the prevalence of high astigmatism in infants and young children who are members of a Native American tribe with a high prevalence of astigmatism. METHODS: SureSight autorefraction measurements were obtained for 1461 Tohono O'odham children aged 6 months to 8 years. RESULTS: The prevalence of astigmatism >2.00 diopters was 30% in Tohono O'odham children during infancy (6 months to <1 year of age) and was 23 to 29% at ages 2 to 7 years. However, prevalence dipped to 14% in children 1 to <2 years of age. At all ages, axis of astigmatism was with-the-rule (plus cylinder axis 90 degrees +/- 30 degrees ) in at least 94% of cases. CONCLUSIONS: As in non-Native American populations, Tohono O'odham infants show a high prevalence of astigmatism, which decreases in the second year of life. However, the prevalence of high astigmatism in Tohono O'odham children increases by age 2 to <3 years to a level near that seen in infancy and remains at that level until at least age 8 years. Longitudinal data are needed to determine whether the increase in high astigmatism after infancy occurs in infants who had astigmatism as infants or is due to the development of high astigmatism in children who did not show astigmatism during infancy.
Authors: Marjean Taylor Kulp; Gui-Shuang Ying; Jiayan Huang; Maureen Maguire; Graham Quinn; Elise B Ciner; Lynn A Cyert; Deborah A Orel-Bixler; Bruce D Moore Journal: Invest Ophthalmol Vis Sci Date: 2014-03-06 Impact factor: 4.799
Authors: Erin M Harvey; Velma Dobson; Joseph M Miller; Jim Schwiegerling; Candice E Clifford-Donaldson; Tina K Green; Dawn H Messer Journal: Invest Ophthalmol Vis Sci Date: 2011-06-21 Impact factor: 4.799
Authors: Jiayan Huang; Maureen G Maguire; Elise Ciner; Marjean Taylor Kulp; Lynn A Cyert; Graham E Quinn; Deborah Orel-Bixler; Bruce Moore; Gui-Shuang Ying Journal: Optom Vis Sci Date: 2014-05 Impact factor: 1.973
Authors: Gui-shuang Ying; Maureen G Maguire; Lynn A Cyert; Elise Ciner; Graham E Quinn; Marjean Taylor Kulp; Deborah Orel-Bixler; Bruce Moore Journal: Ophthalmology Date: 2013-10-31 Impact factor: 12.079