Related Experiment Video
Updated: Jun 11, 2026
05:14
Comparison of Agreement and Accuracy using Binocular Wavefront Optometer with Autorefractor and Phoropter
Published on: September 16, 2025
Peripheral refraction with and without contact lens correction
Jie Shen1, Christopher A Clark, P Sarita Soni
1School of Optometry, Indiana University, Bloomington, Indiana 47405, USA.
Summary
Contact lenses alter peripheral refractive error, reducing retinal blur. Rigid gas permeable lenses significantly decrease field curvature more than soft contact lenses, potentially impacting myopia progression control.
Area of Science:
- Ophthalmology
- Optometry
- Visual Optics
Background:
- Peripheral refractive error impacts retinal image quality.
- This image degradation is hypothesized to drive refractive error development.
- Understanding lens-induced changes is crucial for myopia management.
Purpose of the Study:
- Investigate contact lens (CL) effects on horizontal visual field refractive error.
- Quantify the impact of CLs on peripheral retinal image blur.
- Compare rigid gas permeable (RGP) and soft CL (SCL) effects.
Main Methods:
- Shack-Hartmann aberrometry measured ocular wavefront aberrations.
- Measurements were taken in 5-degree steps across the central 60 degrees horizontally.
- Peripheral refractions analyzed using elliptical pupil data; field curvature defined.
Main Results:
- Hyperopic field curvature increases with central myopia.
- RGP lenses reduced field curvature more than SCLs.
- Reduced field curvature was offset by increased oblique astigmatism, with net blur reduction constant across the visual field.
Conclusions:
- Both SCL and RGP lenses reduce hyperopic field curvature in myopic eyes.
- RGP lenses offer greater reduction but may be limited by astigmatism for myopia control.
- Lens-induced changes in retinal image quality may differentially affect axial growth mechanisms.
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