Comparison of two swept-source optical coherence tomography biometers and a partial coherence interferometer

Area of Science:

• Ophthalmology
• Biomedical Optics
• Medical Devices

Background:

• Accurate ocular biometry is crucial for predicting postoperative refractive outcomes in cataract surgery.
• Comparing different biometry devices, including swept-source optical coherence tomography (SS-OCT) and partial coherence interferometry (PCI), is essential for optimizing surgical planning.

Purpose of the Study:

• To compare the biometry measurements and the prediction of postoperative refractive outcomes from two SS-OCT devices (IOLMaster 700 and Argos) against a PCI device (IOLMaster ver. 5.4).

Main Methods:

• Ocular biometric parameters were measured using two SS-OCT devices and one PCI device.
• The devices' measurements were evaluated against each other.
• Predictive refractive errors were compared one month after cataract surgery.

Main Results:

• SS-OCT devices demonstrated higher success rates for axial length (AXL) measurements compared to the PCI device.
• The Argos SS-OCT showed a tendency for shorter AXL in long eyes and longer AXL in short eyes compared to IOLMaster devices.
• Mean absolute postoperative prediction errors were 0.41 D (IOLMaster ver. 5.4), 0.42 D (IOLMaster 700), and 0.35 D (Argos).

Conclusions:

• While ocular biometric measurements showed high agreement, the Argos SS-OCT exhibited significant differences in AXL compared to IOLMaster devices.
• SS-OCT devices proved superior in measurement success rates over the PCI device.
• The Argos SS-OCT achieved the lowest mean absolute prediction error, suggesting its potential for accurate refractive outcome prediction.