Acquisition Time for Swept-Source Optical Biometry Plus Corneal Power Measurement During Cataract Evaluation

Area of Science:

• Ophthalmology
• Medical Devices
• Optical Biometry

Background:

• Cataract evaluation requires accurate biometry and corneal power measurements.
• Current methods often involve multiple devices, potentially increasing procedure time.
• Optimizing acquisition time is crucial for improving clinical workflow in ophthalmology.

Purpose of the Study:

• To compare the acquisition time of optical biometry and corneal power measurement using the IOLMaster 700 with integrated central topography versus the standard IOLMaster 700 combined with separate corneal topographers.
• To evaluate the agreement of keratometry (K), total keratometry (TK), and equivalent K reading (EKR) parameters between the devices.

Main Methods:

• A prospective, observational study included 96 eyes of 96 cataract patients.
• Acquisition times were recorded for the IOLMaster 700 with central topography, standard IOLMaster 700 alone, and combinations of standard IOLMaster 700 with Cassini or Pentacam HR.
• Agreement analysis was performed for K, TK, and EKR measurements.

Main Results:

• The IOLMaster 700 with central topography demonstrated statistically similar acquisition times to the standard IOLMaster 700 alone (p = 0.501), but was significantly faster than using separate topographers.
• Acquisition time was approximately three times shorter with the integrated device compared to combined devices.
• Statistically significant differences were found in K, TK, and EKR measurements between devices (p < 0.001), except between IOLMaster 700 and Cassini (p > 0.05).

Conclusions:

• The IOLMaster 700 with central topography provides an efficient workflow for cataract evaluation.
• Keratometry readings from the evaluated devices are not interchangeable due to clinically relevant differences.
• These differences may impact cataract surgery outcomes, necessitating careful consideration in clinical practice.