True Muscle Transplantation Surgery Versus Augmented Semi Hang Back Recession in Large Angle Exotropia: Evaluation of Efficacy and Lateral Gaze Incomitance

NCT07784842 — Not applicable, Recruiting, 40 participants, Hassnaa Mohamed Abdelhameed Ahmed

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Registry	NCT07784842
Status	Recruiting
Phase	Not applicable
Study type	Interventional; randomized, parallel, masking: none, treatment
Enrollment	40 (Estimated)
Sponsor	Hassnaa Mohamed Abdelhameed Ahmed (Other)
Conditions	Large Angle Exotropia
Interventions	True Muscle Transplantation Surgery, Augmented Semi hang back Recession (Procedure)
Dates	start 2026-03-01, primary completion 2026-10-01 (estimated), completion 2027-01-01 (estimated), first posted 2026-08-25, last updated 2026-08-25
Locations	1 site in Egypt

-Summary

This a randomized clinical trial comparing True muscle transplantation surgery versus Augmented Semi hang back recession for treatment of large angle exotropia

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+Detailed description

large angle exotropia is a challenging to treat surgically .40 patients will be randomized into 2 groups and followed for 6 months to assess alignment and success rate

+Arms and interventions

Arm	Type	Interventions	Description
True Muscle Transplantation Surgery	Experimental	Procedure: True Muscle Transplantation Surgery	Patients in this group will undergo True Muscle Transplantation Surgery For treatment of large angle exotropia
Augmented Semi hang back Recession	Experimental	Procedure: Augmented Semi hang back Recession	Patients in this group will undergo Augmented Semi hang back Recession for treatment of large angle exotropia

True Muscle Transplantation Surgery (Procedure): true Muscle Transplantation surgery for treatment of large angle Exotropia
Augmented Semi hang back Recession (Procedure): Augmented Semi hang back Recession for treatment of large angle Exotropia

+Outcome measures

Primary outcomes

Surgical success rate at 6 months [6 months post-surgery]: Proportion of patients with ocular alignment within 10 prism diopters of orthotropia measured by prism and alternate cover test

+Eligibility

Sex: All

Inclusion Criteria:

1. Patients with large angle exotropia more than 50 prism diopters.
2. No previous squint surgery.

Exclusion Criteria:

1. Patients with severe ocular surface diseases as ocular cicatricial pemphigoid and severe dry eye.
2. Severe systemic illness that prevents general anesthesia

+Locations (1)

Facility	City	Country	Status
Minya University Hospital - Ophthalmology Department	Minya, Minya Governorate	Egypt	Recruiting