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Review
. 2020 Jul 4;32(3):217-225.
doi: 10.4103/JOCO.JOCO_81_20. eCollection 2020 Jul-Sep.

Non-surgical Management Options of Intermittent Exotropia: A Literature Review

Samira Heydarian  1 , Hassan Hashemi  2 , Ebrahim Jafarzadehpour  3 , Amin Ostadi  2 , Abbasali Yekta  4 , Mohamadreza Aghamirsalim  5 , Nooshin Dadbin  2 , Hadi Ostadimoghaddam  6 , Fahimeh Khoshhal  7 , Mehdi Khabazkhoob  8
Affiliations
Review

Non-surgical Management Options of Intermittent Exotropia: A Literature Review

Samira Heydarian et al. J Curr Ophthalmol. .

Abstract

Purpose: To review current non-surgical management methods of intermittent exotropia (IXT) which is one of the most common types of childhood-onset exotropia.

Methods: A search strategy was developed using a combination of the words IXT, divergence excess, non-surgical management, observation, overcorrecting minus lens therapy, patch/occlusion therapy, orthoptics/binocular vision therapy, and prism therapy to identify all articles in four electronic databases (PubMed, Web of Science, Google Scholar, and Scopus). To find more articles and to ensure that the databases were thoroughly searched, the reference lists of the selected articles were also reviewed from inception to June 2018 with no restrictions and filters.

Results: IXT is treated when binocular vision is impaired, or the patient is symptomatic. There are different surgical and non-surgical management strategies. Non-surgical treatment of IXT includes patch therapy, prism therapy, orthoptic sessions, and overcorrecting minus lens therapy. The objective of these treatments is to reduce the symptoms and the frequency of manifest deviation by decreasing the angle of deviation or enhancing the ability to control it.

Conclusions: Evidence of the efficacy of non-surgical management options for IXT is not compelling. More comprehensive randomized controlled trial studies are required to evaluate the effectiveness of these procedures and detect the most effective strategy.

Keywords: Divergence excess; Intermittent exotropia; Non-surgical management.

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Conflict of interest statement

There are no conflicts of interest.

References

    1. Donnelly UM, Stewart NM, Hollinger M. Prevalence and outcomes of childhood visual disorders. Ophthalmic Epidemiol. 2005;12:243–50. - PubMed
    1. Grönlund MA, Andersson S, Aring E, Hård AL, Hellström A. Ophthalmological findings in a sample of Swedish children aged 4-15 years. Acta Ophthalmol Scand. 2006;84:169–76. - PubMed
    1. Robaei D, Rose KA, Kifley A, Cosstick M, Ip JM, Mitchell P. Factors associated with childhood strabismus: Findings from a population-based study. Ophthalmology. 2006;113:1146–53. - PubMed
    1. Matsuo T, Matsuo C, Matsuoka H, Kio K. Detection of strabismus and amblyopia in 1.5- and 3-year-old children by a preschool vision-screening program in Japan. Acta Med Okayama. 2007;61:9–16. - PubMed
    1. Multi-ethnic Pediatric Eye Disease Study Group. Prevalence of amblyopia and strabismus in African American and Hispanic children ages 6 to 72 months the multi-ethnic pediatric eye disease study. Ophthalmology. 2008;115:1229–360. - PMC - PubMed