Influence of Strabismus Surgery on Fundus Hemodynamics Based on Swept-Source Optical Coherence Tomography Angiography...

Area of Science:

• Ophthalmology
• Medical Imaging
• Vascular Biology

Background:

• Strabismus surgery aims to correct eye alignment.
• Understanding the impact of surgery on ocular hemodynamics is crucial for patient outcomes.
• Swept-source optical coherence tomography angiography (SS-OCTA) offers advanced visualization of fundus vasculature.

Purpose of the Study:

• To investigate the impact of strabismus surgery on fundus hemodynamics.
• To quantify changes in retinal and choroidal vascular parameters using SS-OCTA.

Main Methods:

• 124 patients undergoing horizontal rectus muscle surgery were analyzed.
• Patients were grouped into unilateral recession (UR) and recession-resection (RR) based on surgical extent.
• SS-OCTA was used for pre- and post-operative imaging to measure vessel density, choroidal thickness, and perfusion.

Main Results:

• Horizontal rectus muscle surgery induced transient fundus hemodynamic changes.
• Retinal vessel density increased in the periphery but remained stable near the fovea.
• Choroidal changes were more pronounced than retinal changes, with RR surgery causing greater impact than UR.

Conclusions:

• Horizontal rectus muscle surgery leads to transient ocular hemodynamic alterations.
• These changes vary by retinal region and surgical complexity.
• SS-OCTA provides valuable insights into fundus hemodynamics post-strabismus surgery.