Comparison of Intraocular Lens Power Prediction Accuracy Between 2 Swept-Source Optical Coherence Tomography Biometry...

Area of Science:

• Ophthalmology
• Biomedical Engineering

Background:

• Accurate intraocular lens (IOL) power prediction is crucial for successful cataract surgery outcomes.
• Posterior corneal power significantly influences IOL power calculations.

Purpose of the Study:

• To compare the intraocular lens (IOL) power prediction accuracy of the Eyestar 900 (EyeS900) and IOLMaster 700 (IOLM700).
• To evaluate the impact of estimated posterior keratometry (E-PK) versus measured posterior keratometry (M-PK) on IOL power prediction using the Barrett Universal II (BUII) formula.

Main Methods:

• A retrospective study involving 225 eyes of 225 cataract surgery patients.
• Preoperative measurements were obtained using both the EyeS900 and IOLM700 devices.
• Spherical Equivalent Prediction Error (SEQ-PE), precision, and accuracy were analyzed using the BUII formula with E-PK and M-PK.

Main Results:

• Both EyeS900 and IOLM700 demonstrated comparable IOL power prediction accuracy and precision.
• Statistically significant differences in SEQ-PE were observed between E-PK and M-PK, with M-PK calculations resulting in hyperopic shifts.
• Excellent correlation and agreement were found between the two devices for both E-PK and M-PK.

Conclusions:

• The Eyestar 900 and IOLMaster 700 exhibit similar IOL power prediction accuracy with the BUII formula, regardless of using E-PK or M-PK.
• An adjusted lens factor may be necessary for the BUII formula when employing M-PK with either device.