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Relationship between Control Grade, Stereoacuity and Surgical Success in Basic Intermittent Exotropia

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Affiliated Author(s)
이세엽
Alternative Author(s)
Lee, Se Youp
Journal Title
Korean Journal of Ophthalmology
ISSN
1011-8942
Issued Date
2015
Abstract
Purpose: This study was conducted to identify the relationship between control grade, stereoacuity and surgical
success in basic intermittent exotropia.
Methods: This retrospective study involved 44 basic intermittent exotropia patients who underwent strabismus
surgery and completed at least 6 months of follow-up. The 44 patients were divided into three subgroups
according to their control grade: group 1 (good control group, n = 12), group 2 (fair control group, n = 18), and
group 3 (poor control group, n = 14). Evaluation was done to identify the relationships between near and distance
stereoacuity and control grade, and between surgical success and control grade. Surgical success was
defined as ocular alignment between 5 prism diopters esodeviation and 10 prism diopters exodeviation in the
primary position at the final visit.
Results: Mean near stereoacuity measured by the graded circle test was 57.50 seconds of arc (seconds) in
group 1, 77.77 seconds in group 2, and 131.43 seconds in group 3 (p < 0.01). Mean distance steroacuity measured
by Mentor B-VAT II BVS contour circle was 108.33 seconds in group 1, 148.33 seconds in group 2, and
262.82 seconds in group 3 (p < 0.01). Ten patients (83.33%) in group 1, 12 (66.67%) in group 2, and 9 (64.29%)
in group 3 obtained surgical success (p = 0.28).
Conclusions: In basic intermittent exotropia, better control grade was significantly accompanied by better stereoacuity.
Better control grade was accompanied by higher surgical success rate but with no statistical significance.
Key Words: Exotropia, Prevention & control, Stereoacuity, Strabismus
Department
Dept. of Ophthalmology (안과학)
Publisher
School of Medicine
Citation
Kyung Tae Kang and Se Youp Lee. (2015). Relationship between Control Grade, Stereoacuity and Surgical Success in Basic Intermittent Exotropia. Korean Journal of Ophthalmology, 29(3), 173–177. doi: 10.3341/kjo.2015.29.3.173
Type
Article
ISSN
1011-8942
DOI
10.3341/kjo.2015.29.3.173
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/34825
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Ophthalmology (안과학)
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