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$Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter$

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Published on: September 16, 2025

Validation of a Clinical Aberrometer Using Pyramidal Wavefront Sensing.

Neeraj K Singh, Matt Jaskulski¹, Viswanathan Ramasubramanian¹

¹School of Optometry, Indiana University, Bloomington, Indiana.

Optometry and Vision Science : Official Publication of the American Academy of Optometry

|October 9, 2019

Summary

This summary is machine-generated.

This study validates the Osiris pyramidal wavefront sensor, a new aberrometer, showing it provides accurate and repeatable measurements of ocular aberrations. It performs well even with complex optics like multifocal lenses and peripheral vision, crucial for optical corrections.

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Area of Science:

Ophthalmic optics
Wavefront sensing technology
Ocular aberration measurement

Background:

Accurate measurement of ocular aberrations is essential for effective optical corrections.
Wavefront aberrometry is a key technology for quantifying these aberrations.

Purpose of the Study:

To evaluate the accuracy and repeatability of the Osiris, a new high-resolution pyramidal wavefront sensor-based aberrometer.
To assess its performance across various conditions, including engineered and human eyes, and different optical challenges.

Main Methods:

The Osiris aberrometer was tested using an engineered model eye and a dilated presbyopic eye.
Systematic introduction of lower- and higher-order aberrations using trial lenses and phase plates.
Comparison of Osiris measurements with a calibrated COAS-HD aberrometer, including foveal and peripheral optics, and multifocal contact lenses.
Evaluation of the impact of simulated misalignment.

Main Results:

Low root-mean-square errors were observed for sphere, cylinder, and axis in both model and human eyes.
High repeatability was demonstrated, with low standard deviations for spherical error.
Measurements of aberrations closely matched those from the COAS-HD aberrometer, even with multifocal contact lenses.
Simulated operator errors showed minimal impact on sphere estimates.

Conclusions:

The Osiris pyramidal aberrometer offers accurate and repeatable measurements of ocular aberrations.
Its performance is reliable for both lower- and higher-order aberrations.
The device is suitable for clinical use, including challenging scenarios involving peripheral optics and multifocal correction.