MICROSCOPE-INTEGRATED INTRAOPERATIVE OPTICAL COHERENCE TOMOGRAPHY FOR INTRAOCULAR LENS TILT EVALUATION DURING...

Area of Science:

• Ophthalmology
• Surgical Technology
• Medical Imaging

Background:

• Scleral-sutured intraocular lens (IOL) fixation is a critical surgical procedure.
• Accurate IOL positioning, including tilt assessment, is essential for optimal visual outcomes.
• Intraoperative imaging modalities can potentially enhance surgical precision.

Purpose of the Study:

• To assess the feasibility and clinical utility of a microscope-integrated intraoperative optical coherence tomography (MI-OCT) system.
• To evaluate the MI-OCT system's effectiveness during scleral-sutured IOL fixation procedures.
• To determine the system's capability in assessing intraocular lens tilt during surgery.

Main Methods:

• Scleral-sutured IOL fixation was performed in 18 eyes using the Zeiss Rescan 700 MI-OCT system.
• Intraoperative optical coherence tomography (OCT) images were captured during the procedure.
• The utility of MI-OCT for evaluating IOL tilt was assessed in various meridians.

Main Results:

• The MI-OCT system provided clear anterior segment images in all 18 cases.
• Crucial information for evaluating IOL tilt was obtained in 15 cases.
• Postoperative outcomes showed significant improvement in spherical equivalent, with stable visual acuity and intraocular pressure.

Conclusions:

• The commercial MI-OCT system is feasible for intraoperative evaluation of IOL tilt during scleral-sutured IOL fixation.
• Utility was limited in cases with asymmetric irises or posteriorly positioned IOLs.
• Future MI-OCT systems could benefit from wider scanning ranges and anterior chamber angle referencing.