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. Author manuscript; available in PMC: 2018 Jul 4.
Published in final edited form as: Ophthalmic Epidemiol. 2008 Jan-Feb;15(1):17–23. doi: 10.1080/09286580701772011

Table 5.

Prevalence of Visual Impairment with Astigmatism

Cylinder Value
(Diopters)
Right eye Left eye No. (%)
Children*
< 0.75 4073 (95.1) 4057 (94.8) 3963 (92.6)
≥ 0.75 to < 1.50 150 (3.5) 156 (3.6) 230 (5.4)
≥ 1.50 to < 2.00   23 (0.6)   23 (0.5)   33 (0.8)
≥ 2.00   36 (0.8)   45 (1.1)   56 (1.3)
All   4282 (100.0)   4281 (100.0)   4282 (100.0)
*

Astigmatism in children is categorized using the worse eye.