Analysis reveals high rates of astigmatism in Zuni and Navajo children, suggesting genetic and environmental causes.
Data provided by a practicing optometrist in Gallup, New Mexico indicate a greater than expected frequency of astigmatism among first‐and second‐grade Zuni and Navajo Indian children. Zuni children displayed a greater frequency of high astigmatism (3.00 D) than Navajo children. In an effort to understand the etiology of this prevalence of high astigmatism, a study of corneal astigmatism in 22 Zuni families was undertaken. The results suggest both genetic and environmental causes. A very high frequency of albinism was also observed among the Zuni.
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Mohindra et al. (1977) studied this question.
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