Original ArticleThe Course of Intermittent Exotropia in a Population-Based Cohort
Section snippets
Subjects and Methods
The medical records of all patients younger than 19 years of age who were residing in Olmsted County, Minnesota when diagnosed by an ophthalmologist as having intermittent exotropia between January 1, 1975 and December 31, 1994 were retrospectively reviewed. Institutional review board approval was obtained for this study. Potential cases of intermittent exotropia were identified using the resources of the Rochester Epidemiology Project, a medical record linkage system designed to capture data
Results
During the 20-year study period, 184 new cases of childhood intermittent exotropia were diagnosed at a mean age of 6.3 years (range, 8.4 months to 18.6 years) in Olmsted County, Minnesota. Pertinent historical and clinical characteristics of the study patients are shown in Table 1. Two thirds of the patients were female, whereas 1 in 3 reported a family history of strabismus. A history of prematurity or diplopia was uncommon, and the ocular findings were otherwise unremarkable for this disorder
Discussion
The findings from this cohort of children with intermittent exotropia from Olmsted County, Minnesota suggest that the distance exodeviation of approximately one half of patients would increase by 10 or more PD after 20 years of follow-up. During a median follow-up of 5.6 years, the exotropia resolved in 3.6%, and children who received surgery in this cohort were significantly more likely to demonstrate an increase in their preoperative angle of deviation than those who did not undergo surgery.
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Preoperative and Postoperative Clinical Factors in Predicting the Early Recurrence Risk of Intermittent Exotropia After Surgery
2023, American Journal of OphthalmologyAmbulatory Monitoring With Eye Tracking Glasses to Assess the Severity of Intermittent Exotropia
2023, American Journal of OphthalmologyNonsurgical Treatment of Strabismus
2022, Advances in Ophthalmology and OptometryCitation Excerpt :Twenty-one percent received nonsurgical treatment (11% each orthoptics and overminus, 2.8% prism, 8.3% alternate patching, and 63.9% dominant eye patching). The investigators estimated that the likelihood of the deviation increasing by 10Δ or more was 23.1% at 5 years, 29.2% at 10 years, and 52.8% at 20 years [66]. Buck and colleagues [67] prospectively looked at treatment options for children with intermittent exotropia including observation (53%), glasses, patching, orthoptics and/or prism (13%), surgery (16%), and visual acuity treatment only (17%).
Pickwell’s Binocular Vision Anomalies
2021, Pickwell's Binocular Vision AnomaliesMeasurement of the Angle of Exodeviation With Polarized Glasses in Intermittent Exotropia
2020, American Journal of OphthalmologyCitation Excerpt :The angle of deviation with the occlusion test at near was also greater than that with the ACT and Polaroid test (P < .01 for all). In patients with IXT, there were significant changes in the angle of deviation with repeated measures by the same method.1,2,9 This variable nature of IXT makes it difficult to determine the angle of deviation for surgical planning.
Intermittent exotropia
2019, Journal Francais d'Ophtalmologie
Manuscript no. 2005-736.
This study was supported in part by an unrestricted grant from Research to Prevent Blindness, Inc., New York, New York.