Previous studies in parts of Iran report a childhood prevalence of strabismus of 1.2 to 2.3%. The authors aimed to evaluate the prevalence of strabismus in underserved rural areas of Iran in all age groups. In 2015 they conducted a cross section study; 3314 of 3851 subjects participated with 3248 providing data for analysis. Mean age was 37.4±21.4 years; 56.3% were male. Prevalence of heterotropia was 4.3%; increasing from 1.09% in children <5 years of age to 7.45% in adults aged 61-70 years. Heterotropia had no significant association with age, sex or living place. Exotropia was prevalent in 3.87% and esotropia in 0.43%. Exotropia was greater than esotropia in all age groups except children <5 years old where the prevalence of exotropia was 0%. Heterophoria was present in 28.37%: 4.35% in children <5 years and 42.24% in adults aged 61-70 years. Near exophoria was more common than near esophoria and distant exophoria and esophoria. The prevalence of strabismus in young children was similar to other reported studies.
Iranian prevalence of strabismus and heterophoria
Reviewed by Fiona Rowe
The prevalence of strabismus, heterophorias and their associated factors in underserved rural areas of Iran.
CONTRIBUTOR
Fiona Rowe (Prof)
Institute of Population Health, University of Liverpool, UK.
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