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Updated: Jul 17, 2025
07:06
Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
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Retinal shadows produced by myopia control spectacles.
Martín de Tomas1, Abel Szeps2, Gabriel Martín3,4
1International Optics and Ophthalmology, Buenos Aires, Argentina.
Summary
Retinal OCT imaging visualized peripheral shadows from myopia control spectacle lenses (DIMS, DEFOCUS, DOMS). This technique aids in understanding and improving myopia control therapies by showing lens-induced defocus effects.
Area of Science:
- Ophthalmology
- Optometry
- Biomedical Optics
Background:
- Myopia control spectacles aim to slow myopia progression.
- Understanding the optical effects of these lenses on the retina is crucial for efficacy.
- Ocular coherence tomography (OCT) is a non-invasive imaging technique for retinal visualization.
Purpose of the Study:
- To analyze ocular coherence tomography (OCT) images of retinal shadows caused by defocus and diffusion optics spectacles.
- To assess the visualization of retinal effects induced by specific myopia control spectacle designs.
Main Methods:
- One eye was fitted with Hoya Defocus Incorporated Multiple Segments (DIMS), peripheral add spectacle (DEFOCUS), and Diffusion Optics Multiple Segments (DOMS) lenses.
- Infrared OCT captured retinal images of the macular region with central fixation.
- Corneal power and intraocular distances were measured using an optical biometer.
Main Results:
- DIMS and DOMS lenses created distinct peripheral retinal shadows, leaving the central 10-11° clear.
- The DEFOCUS lens resulted in a darkened peripheral retinal area.
- Magnification analysis indicated the OCT beam was imaged approximately 31 mm beyond the eye's front.
Conclusions:
- Retinal OCT imaging, with device-specific correction, can visualize regions affected by defocus or contrast reduction from myopia control spectacles.
- This visualization technique holds potential value for enhancing myopia control therapies.
- OCT provides a method to assess the in-situ optical impact of novel spectacle lens designs.
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