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Related Experiment Video

Updated: Aug 14, 2025

Subjective Refraction Test Using a Smartphone for Vision Screening
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Subjective Refraction Test Using a Smartphone for Vision Screening

Published on: October 18, 2024

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Comparison of Refractive Prediction Accuracy With Three Optical Devices.

Shi-Ming Cheng, Xi Li, Jia-Sheng Zhang

    Journal of Refractive Surgery (Thorofare, N.J. : 1995)
    |January 11, 2023
    PubMed
    Summary
    This summary is machine-generated.

    The OA-2000 and Anterion biometers demonstrated higher axial length (AL) measurement success rates than the IOLMaster 500 in cataract patients. Refractive prediction accuracy was comparable across all three devices, indicating good performance for all.

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    Area of Science:

    • Ophthalmology
    • Biomedical Engineering
    • Optical Metrology

    Background:

    • Cataract surgery requires precise biometry for accurate refractive outcomes.
    • Several optical biometers are available, each with varying performance characteristics.
    • Comparing the accuracy and reliability of these devices is crucial for clinical decision-making.

    Purpose of the Study:

    • To compare the refractive prediction accuracy of the OA-2000, Anterion, and IOLMaster 500 biometers.
    • To evaluate the axial length (AL) measurement acquisition rates of these devices in cataract patients.
    • To assess the agreement of biometric parameters obtained from the three devices.

    Main Methods:

    • Patients with cataract underwent scanning with OA-2000, Anterion, and IOLMaster 500.
    • Axial length (AL) measurement success rates were calculated and compared using chi-square tests.
    • Bland-Altman analysis assessed agreement for keratometry (K1, K2), anterior chamber depth (ACD), and AL.
    • Refractive prediction accuracy was evaluated using predictive error (PE) with four standard formulas.

    Main Results:

    • OA-2000 and Anterion showed significantly higher AL acquisition rates (97.35%, 94.70%) compared to IOLMaster 500 (84.82%).
    • Good agreement was observed between the three devices for K1, K2, ACD, and AL measurements.
    • No statistically significant differences were found in refractive prediction accuracy (MAE, MedAE, PE within ±0.50-1.00 D) among the devices.

    Conclusions:

    • OA-2000 and Anterion offer superior AL measurement acquisition rates compared to IOLMaster 500 in cataract patients.
    • All three biometers demonstrate good agreement for key biometric parameters.
    • Refractive prediction accuracy is comparable across the OA-2000, Anterion, and IOLMaster 500, suggesting reliable performance for surgical planning.