Results of Callisto Eye System in Toric Intraocular Lens Alignment

Area of Science:

• Ophthalmology
• Surgical Technology
• Medical Devices

Background:

• Accurate toric intraocular lens (IOL) positioning is critical for effective astigmatism correction.
• Traditional methods for toric IOL alignment can be challenging and prone to inaccuracies.
• Image-guided surgical systems offer potential improvements in precision and efficiency.

Purpose of the Study:

• To evaluate the effectiveness of the Callisto eye image-guided, markerless system for toric IOL positioning.
• To assess the accuracy of toric IOL alignment using the Callisto system in a clinical setting.

Main Methods:

• A retrospective analysis of 60 eyes from 46 patients undergoing toric IOL implantation.
• Preoperative reference image registration using the IOLMaster 700 biometer, transferred to the Callisto eye system.
• Alignment of the toric IOL with the steep axis using Callisto Z Align technology during surgery.
• Postoperative measurement of IOL axis using smartphone application and comparison with intended axis.

Main Results:

• The mean absolute difference between the intended and postoperative toric IOL axes was 2.71±1.64 degrees.
• The Callisto system demonstrated successful application in aligning toric IOLs.

Conclusions:

• The Callisto eye image-guided, markerless system is effective in assisting precise toric IOL positioning.
• This technology shows promise for enhancing accuracy in astigmatism correction surgery.