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Horizontal curves are essential in highway and railroad design, ensuring smooth and safe transitions between straight path segments, or tangents. These curves allow vehicles to maintain speed without abrupt changes, minimizing accidents and improving travel efficiency.A horizontal curve is typically defined by its geometric relationship to two tangents that meet at an intersection point (P.I.), where a simple curve is introduced to connect them. The back tangent refers to the initial tangent...
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Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
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Plication versus Resection in Horizontal Strabismus Surgery.

Jill Kühne1, Anja Palmowski-Wolfe1

  • 1University Eye Hospital Basel, Basel, Switzerland.

Klinische Monatsblatter Fur Augenheilkunde
|April 19, 2019
PubMed
Summary

Recession/plication is an effective alternative to recession/resection for strabismus surgery. Both methods showed similar outcomes for horizontal strabismus, with plication avoiding muscle cutting.

Area of Science:

  • Ophthalmology
  • Surgical Techniques
  • Strabismus Treatment

Background:

  • Strabismus surgery commonly employs extraocular muscle (EOM) strengthening via plication or resection.
  • Comparing the efficacy of these two EOM strengthening techniques is crucial for surgical decision-making.

Purpose of the Study:

  • To compare the effectiveness of plication versus resection of the antagonist EOM when combined with recession in horizontal strabismus surgery.
  • To evaluate surgical outcomes at 1 week and 3 months post-operation.

Main Methods:

  • Retrospective analysis of horizontal strabismus surgeries combining recession with either plication or resection of the antagonist EOM.
  • Inclusion criteria: at least 3 months follow-up; exclusion criteria: prior eye surgery, binocular surgery, or oblique/vertical EOM surgery.

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  • Pre- and postoperative deviation angles measured using the alternating prism cover test at distance fixation.

    • Main Results:

    • No significant difference in surgical effectiveness between recession/plication and recession/resection groups for either esodeviations or exodeviations at 1 week or 3 months.
    • Similar mean differences in deviation angles (1.2 PD at 1 week, 1.7 PD at 3 months) and dose effects (PD/mm) between the plication and resection groups.
    • No significant differences observed in patient demographics or deviation types between the groups.

    Conclusions:

    • Recession/plication is a viable alternative to recession/resection for horizontal strabismus surgery.
    • Plication offers comparable surgical effectiveness to resection without requiring muscle cutting.
    • The choice between plication and resection can be based on surgeon preference and patient factors.