Comparative analysis of 2 swept-source optical coherence tomography biometers.

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Optical Coherence Tomography

Background:

• Accurate biometry is essential for refractive outcomes in cataract surgery.
• Swept-source optical coherence tomography (SS-OCT) offers advanced capabilities for ocular measurements.

Purpose of the Study:

• To compare the agreement, repeatability, and correlation of ocular measurements between two SS-OCT biometers: the IOLMaster 700 (reference) and the Argos (new).
• To evaluate the performance of the Argos biometer against a established standard.

Main Methods:

• Retrospective case series involving 112 patients (218 eyes).
• Measurements included axial length, keratometry, central corneal thickness, anterior chamber depth, lens thickness, and corneal diameter.
• Bland-Altman analysis for agreement, Cronbach's alpha for internal consistency, and intraclass correlation coefficient (ICC) for repeatability were used.

Main Results:

• Statistically significant differences were found between biometers for most parameters (P < .05), except axial length.
• Very high correlation was observed for all parameters except corneal diameter.
• Excellent internal consistency and intraoperator repeatability (ICC) were demonstrated for both biometers.

Conclusions:

• The Argos SS-OCT biometer demonstrates good agreement and repeatability compared to the IOLMaster 700.
• The findings support the clinical utility of the Argos biometer for ophthalmic measurements.