Poster 102

by in  Poster Session 2

Operative Optical Coherence Tomography in Assessing Depth of Scleral Passes During Strabismus Surgery

Andrew N. Troia, MD; Sapna Tibrewal, MD; Kanwal Nischal, MD; Matthew Pihlblad, MD
Children’s Hospital of Pittsburgh of UPMC
Pittsburgh, PA


Introduction: We report the first use of intraoperative OCT to assess and compare depth of scleral passes during strabismus surgery.

Methods: In this ongoing study, patients underwent strabismus surgery. During the scleral pass, the needle was left in the sclera. The intraoperative OCT (Zeiss Rescan 700, Oberkochen, Germany) was then used to image the needle in the sclera. After confirmation of appropriate depth, the needle was pulled through. The images were reviewed postoperatively.

Results: Most passes were between 20 and 50% of scleral thickness. There were no perforations.

Discussion: Two dreaded complications of strabismus surgery are slipped muscles and scleral penetration or perforation. Intraoperative OCT can be used as a tool to assess proper depth of passes, and confirm scleral penetration or perforation, if suspected.

Conclusion: Intraoperative OCT is a safe and easy way to assess depth of scleral passes during strabismus surgery.

References: Hussein, Mohamed & K Coats, David & D Harris, Lindsey & R Sanchez, Cecilia & Paysse, Evelyn. (2007). Ultrasound biomicroscopy (UBM) characteristics of scleral tunnels created with suture needles commonly used during strabismus surgery. Binocular vision & strabismus quarterly. 22. 102-8.
Dang, Yadvinder et al. Scleral penetrations and perforations in strabismus surgery and associated risk factors. Journal of American Association for Pediatric Ophthalmology and Strabismus {JAAPOS} , Volume 8 , Issue 4 , 325 – 331.

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