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Completed

NCT Number: NCT05786053

Correction of V-pattern Strabismus by Graded Recession of Inferior Oblique Muscle .

V pattern strabismus is the commonest of alphabet pattern. Its identification is essential to plan a proper surgical management. Graded recession is a very logical approach to treat inferior oblique overaction (IOOA). The aim Is to evaluate the efficacy of graded recession of inferior oblique muscle for correction of different grades of V pattern.

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Key information

Conditions

V Pattern Esotropia Cranial Nerve Diseases Eye Diseases Monocular Exotropia With V Pattern Nervous System Diseases Ocular Motility Disorders Strabismus

Age range

3 year–18 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Faculty of medicine, Tanta, ELGharbia, Egypt

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About this study

prospective interventional study for forty patients with V pattern strabismus and primary inferior oblique overeaction will be evaluated by prism cover test to assess the grade of IOOA and amplitude of V-pattern. Graded recession of IO muscle depends on the amplitude of the V-pattern and degree of IOOA. Eight mm recession for amplitude 7.5 to 10 degree and mild IOOA (10 or +1) ,10 mm recession for amplitude 11- 15 degree and moderate IOOA (11-15 or +2) and maximum recession for amplitude more than 15 degree and marked IOOA ( more than 15 degree or +3). Simultaneous correction of the horizontal deviation will be performed at the same sitting. Follow up after I week,1 month ,3 month and 6-month.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Cases with V pattern strabismus with the age of the patients will be ≥3 years.

Exclusion criteria

  • - Structural ocular pathology
  • Significant neurodevelopmental delay

Treatment and study plan

graded recession of inferior oblique muscle

Procedure

. Graded recession of IO muscle depends on the amplitude of the V-pattern and degree of IOOA. Eight mm recession for amplitude 7.5 to 10 degree and mild IOOA (10 degree or +1) ,10 mm recession for amplitude 11- 15 degree and moderate IOOA (11 -15 or +2) and maximum recession for amplitude more than 15 degree and marked IOOA (more than15 degree or +3). Simultaneous correction of the horizontal deviation was performed at the same sitting.

Primary outcomes

  1. orthotropia in primary position with no v pattern esotropia or exotropia.

    Time frame: 6 month

    by measuring the distant angle of strabismus in primary and upgaze less than 10prism dioptre.

Secondary outcomes

  1. No Inferior oblique overaction

    Time frame: 6 month

    2.No hypertropia in adducted position.Graded recession of IO muscle depends on the amplitude of the V-pattern and degree of IOOA. Eight mm recession for amplitude 7.5 to 10 degree and mild IOOA (10 degreeor +1) ,10 mm recession for amplitude 11- 15 degree and moderate IOOA (11 -15 or +2) and maximum recession for amplitude more than 15 degree and marked IOOA ( 15 or +3). Simultaneous correction of the horizontal deviation was performed at the same sitting.

Sponsors and collaborators

Lead sponsor

Tanta University

Other

Registry information

Official study title

Evaluation of Graded Recession of Inferior Oblique Muscle for Correction of Different Grades of V-pattern Strabismus

Acronym: Pattern

Important dates

Study start
2020
Primary completion
2022
Study completion
2023
First posted
Mar 27, 2023
Registry last updated
Mar 27, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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