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Quantitative evaluation of cyclodeviation in determining the effectiveness of surgical treatment of hyperfunction of the lower oblique muscle

Annotation

The ongoing search for optimal methods and principles for the surgical treatment of vertical strabismus, caused by hyperfunction of the lower oblique muscle, suggests the urgency of developing new approaches to the elimination of hypertropy, depending on the degree of its expression. Purpose : to determine the effectiveness of the dosing procedure for the degree of anterior transposition of the lower oblique muscle in the surgical treatment of its hyperfunction of varying severity on the basis of a quantitative assessment of cyclodeviation. Material and methods : from January 2013 to October 2016, 60 children (96 eyes) aged 3 to 17 years with vertical strabismus due to hyperfunction of the lower oblique muscle were monitored. Depending on the magnitude of the vertical deviation in the adduction measured in degrees by the Hirschberg method in the head rotation position, all patients were divided into two groups: group 1 - no more than 7° according to Hirschberg (26 children, 42 eyes); group 2 - more than 7° according to Hirschberg (34 patients, 54 eyes). All patients underwent weakening of the lower oblique muscle by its dosed front transposition, the degree of which depended on the magnitude of the vertical deviation angle. Results : hypertrophy in the primary position of the gaze in group 1 was completely eliminated in 17 eyes (94.4 %), in group 2 - in 20 eyes (90.9 %). Hypertrophy in adduction in group 1 was completely eliminated in 40 eyes (95.2 %), in group 2 - in 51 eyes (94.4 %). Conclusions : the developed technique of dosed front transposition of the lower oblique muscle allows to achieve high anatomical and functional results and shows high efficiency in the surgical treatment of vertical strabismus, which is confirmed by the data of modern methods of ophthalmological examination.

Keywords

hyperfunction of the lower oblique muscle; dosing of degree of anterior transposition; surgical treatment

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DOI

10.20310/1810-0198-2017-22-4-720-726

UDC

617.761.42

Pages

720-726

References

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Received

2017-07-04

Section of issue

Medicine. modern achievements in ophthalmology

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