Frequency of horizontal strabismus cases at a university hospital
DOI:
https://doi.org/10.18004/Keywords:
strabismus, esotropia, exotropia.Abstract
Introduction: Strabismus is an abnormal arrangement of the eyes in which the visual axes are not
directed at the same object at the same time. Depending on the direction of the deviation, they
are classified as horizontal, vertical and torsional. Horizontal strabismus can be subclassified
into esotropias and exotropias. Objective: To determine the frequency of the different types of
strabismus that attend a university hospital in Paraguay. Materials and methods: Observational,
descriptive, cross-sectional, retrospective design. Non-probabilistic sampling of consecutive
cases. The electronic records of patients of all ages diagnosed with strabismus who attended
the Ophthalmology Service of the Hospital de Clínicas in the city of San Lorenzo, Paraguay,
from January 2022 to December 2023 were studied. The variables analyzed were: age, sex
and the different types of esotropias and exotropias. Results: 393 horizontal strabismus were
found. The mean age was 12.13 ± 12.50 years, with an age range of 3 months to 83 years. 205
(52.2%) patients were female. 206 (52.4%) cases were esotropias, of which 101 (49%) cases
were congenital esotropias. 187 cases (47.6%) were exotropias, of which 117 (62.6%) cases
were intermittent exotropias. Conclusion: Esotropias were the most frequent type of ocular
misalignment, among which the most frequent subtype was congenital esotropia. Intermittent
exotropia was the most frequent subtype of exotropia.
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