Related Experiment Video
Updated: Feb 23, 2026

Surgical Correction for Pediatric Epiblepharon and Trichiasis
Published on: July 8, 2025
Securing extraocular muscles in strabismus surgery: biomechanical analysis of muscle imbrication
1Department of Ophthalmology, Columbia University Medical Center, New York.
Abstract:
An experimental study was performed to quantitatively evaluate the tensile strength of extraocular muscle imbrication as it relates to the positioning of the imbricating suture. The study was conducted in a controlled fashion using fresh ex vivo pig eyes with extraocular muscles attached and a precision digital force gauge. The study provides clinically translatable data to inform surgical technique regarding secure muscle imbrication. Results suggest that imbrications performed 0.5 mm or less from the cut muscle edge or 0.5 mm or less from the lateral margin may be prone to tensile failure.
Related Concept Videos
Muscles of the Eye
Extraocular Muscles
The six extraocular muscles surround the eyeball and control its movements. They are responsible for a wide range of eye motions, including looking up, down, left, right, and...
Accessory Structures of the Eye
Muscles for Facial Expressions
Fascicle Arrangement in Skeletal Muscles
The four primary types of muscle based on fascicle arrangement are:
Mechanism of Ciliary Motion
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...

