First-finder-related Clinical Features of Intermittent Exotropia
10.3341/jkos.2022.63.11.928
- Author:
Chung Woon KIM
1
;
Seung Woo KIM
;
Jaeeun YU
;
Seung Ah CHUNG
Author Information
1. Department of Ophthalmology, Ajou University School of Medicine, Suwon, Korea
- Publication Type:Original Article
- From:Journal of the Korean Ophthalmological Society
2022;63(11):928-934
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Purpose:To determine whether the clinical features of intermittent exotropia (IXT) needing muscle surgery were different in the ophthalmologist-detected and non-specialist-detected groups (including parents).
Methods:Medical records of 218 children (mean age: 5.9 ± 1.4 years) with IXT of ≥ 20 prism diopters (PD) were reviewed retrospectively. The angles of deviation were measured using the prism and alternate cover test and assessed by two ophthalmologists using photographs with a translucent occluder (photographic angle). The IXT subtype, fusional control, stereopsis, suppression, and spherical equivalent (SE) were compared between the ophthalmologist-detected and non-specialist-detected groups.
Results:Mean 25.8 ± 6.8 PD of distant angle of IXT was first detected by the ophthalmologist in 41 patients (18.8%) and the non-specialists in 177 patients (81.2%). The deviated eye was more myopic in the ophthalmologist-detected than non-specialist- detected group (-0.77 ± 1.59 diopters [D] vs. -0.19 ± 1.48 D, p = 0.03). There were no other differences between the two groups. A comparison of 39 age- and non-dominant eye SE-matched pairs demonstrated that the measured angles for distant and near fixation were smaller in the ophthalmologist-detected than non-specialist-detected group (24.0 ± 6.8 PD vs. 28.5 ± 6.4 PD and 26.9 ± 6.6 PD vs. 31.0 ± 6.4 PD, respectively, p < 0.01), while the remaining characteristics, including the photographic angle, were similar.
Conclusions:In cases with small angles of deviation or myopia, IXT with angles requiring surgical correction were commonly first detected by ophthalmologists during examinations.
