This study is designed to correct large-angle exotropia by monocular surgery. It compares two augmented recession techniques, which are recession with muscle transplantation and recession with Y splitting.
Age should be of more than 6 years Exotropia of an angle ranging from 50 to 70 PD Myopic or hypermetropic refraction
history of previous squint surgery significant vertical deviation incomitant squint in the form of paralytic or restrictive disorder any neurological disease
Parallel
muscle transplantation
Procedure/Surgerytransplanting a resected part of medial rectus to the already recessed lateral rectus muscle
Y splitting
Procedure/SurgeryY splitting of the recessed lateral rectus muscle
Ocular alignment
To measure ocular alignment using prisms after lateral rectus recession with muscle transplantation versus lateral rectus recession with Y splitting
palpebral fissure height
Assess whether this is a change in palpebral fissure height pre- and postoperatively by measurement using a ruler
ocular incomitance
The presence of ocular incomitance and gaze restriction using prisms and motility tests after surgery
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