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Developmental Changes in Anterior Corneal Astigmatism in Tohono O’odham Native American Infants and Children
Developmental Changes in Anterior Corneal Astigmatism in Tohono O’odham Native American Infants and Children
- Source :
- Ophthalmic Epidemiology. 20:102-108
- Publication Year :
- 2013
- Publisher :
- Informa UK Limited, 2013.
-
Abstract
- Purpose: To describe change in corneal astigmatism in infants and children of a Native American tribe with a high prevalence of astigmatism.Longitudinal measurements of corneal astigmatism were obtained in 960 Tohono O'odham children aged 6 months to8 years. Change in corneal astigmatism (magnitude (clinical notation), J0, J45) across age in children with high astigmatism (≥2 diopter (D) corneal astigmatism) or low/no astigmatism (2 D corneal astigmatism) at their baseline measurement was assessed.Regression analyses indicated that early in development (6 months to3 years), astigmatism magnitude decreased in the high astigmatism group (0.37 D/year) and remained stable in the low/no astigmatism group. In later development (3 to8 years), astigmatism decreased in the high (0.11 D/year) and low/no astigmatism groups (0.03 D/year). In 52 children who had data at all three of the youngest ages (6 months to1 year, 1 to2 years, 2 to3 years) astigmatism decreased after infancy in those with high astigmatism (p = 0.021), and then remained stable from age 1-2 years, whereas astigmatism was stable from infancy through age 1 year and increased from age 1-2 years in the low/no astigmatism group (p = 0.026). J0 results were similar, but results on J45 yielded no significant effects.The greatest change occurred in highly astigmatic infants and toddlers (0.37 D/year). By age 3 years, change was minimal and not clinically significant. Changes observed were due primarily to change in the J0 component of astigmatism.
- Subjects :
- medicine.medical_specialty
Refractive error
Epidemiology
Astigmatism
Corneal Diseases
High astigmatism
Child Development
Ophthalmology
Prevalence
medicine
Humans
Child
Minority Groups
Dioptre
medicine.diagnostic_test
Native american
business.industry
Arizona
Corneal Topography
Infant
Corneal topography
medicine.disease
Child, Preschool
Indians, North American
sense organs
business
Corneal astigmatism
Follow-Up Studies
Subjects
Details
- ISSN :
- 17445086 and 09286586
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Ophthalmic Epidemiology
- Accession number :
- edsair.doi.dedup.....39564d579354b918ad00aebfa886d560
- Full Text :
- https://doi.org/10.3109/09286586.2013.767355