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PubMed · 3320163

Divergence excess exotropia.

B S Kran·R Duckman
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Abstract

This paper presents a summary of information regarding divergence excess exotropia. The first portion of the paper deals with the description (i.e., definition, onset, natural history, prevalence, sexual distribution, symptomatology, and the differential diagnosis of the two subtypes) of this entity. The second portion of the paper reviews the various treatment options (surgery, lens therapy, prism therapy, and vision training) currently available with emphasis on vision training/orthoptics. We conclude that divergence excess exotropia is effectively managed at least as well by vision training/orthoptics as it is by surgery. We propose that future research examine in greater detail the characteristics of the subtypes of this entity to potentially derive improved training techniques for this population.

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ExotropiaHumansStrabismusJournal ArticleReview

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BibTeXRIS

B S Kran, R Duckman. 1987. Divergence excess exotropia.. https://pubmed.ncbi.nlm.nih.gov/3320163/

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PubMed2001

[Free mucosa transplant in the correction of extreme deviations of exotropia].

BACKGROUND: The majority of cases of exotropia with extreme deviations (30-45 degrees or 60-90 prism dioptres) are secondary forms of strabismus, either consecutive, following monolateral combined recession/resection procedures in childhood, extreme anisometropia or following trauma. For the surgical treatment the deviation is often too great to be corrected completely by conventional repositioning of the medial and lateral rectus muscle of the affected eye and patients justifiably refuse an operation even on the main eye because the indications are mostly more aesthetic than functional. METHODS: The paper presents a technique of a free mucosa transplant. The effect can be strengthened and made more secure following repositioning of the muscle. RESULTS: With this method even extreme deviations (up to 45 degrees corresponding to 90 prism dioptres) could be successfully and permanently corrected by surgery on the deviated one eye only. CONCLUSIONS: This method provides a new option for patients who are often incorrectly told that their deviation cannot be corrected by monolateral surgery.

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