Search Results - geunyoung+yoon

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Approach to designing refractive, presbyopia-correcting ophthalmic lenses with a large continuous DoF, independent of pupil size

Background Presbyopia is an ophthalmic condition wherein the eye loses the ability to focus clearly due to lens aging. It can significantly affect the quality of life. Since eventually, every person will inevitably develop this condition, it is important to find a solution to it. Currently, spectacle-free treatment can be achieved by using contact...

Published: 2/14/2024 | Inventor(s): Geunyoung Yoon, Jiakai Lyu

Keywords(s):

Category(s): Optics

Novel contact lens and eyeglass designs to reduce, if not stop, myopia progression

Background Worldwide, children are developing myopia earlier in life which continues to worsen over time leading to additional visual impairment and sometimes blindness. While this trend of early, severe myopia progression started predominately in Asian countries, over the pandemic this phenomenon has been observed at greater rates worldwide. Although...

Published: 2/14/2024 | Inventor(s): Geunyoung Yoon

Keywords(s):

Category(s): Optics

Compact, Portable (Hand-Held) Wavefront Sensor

Applications: The present invention is a compact, portable (hand-held) wavefront sensor. It is composed of a double path dichrotic filter, a beam splitter, and a dual, unequal wavelength illumination arranged in a system able to measure ocular wave aberrations. Applications include: - Vision screening of infants and children. - Measurement...

Published: 2/1/2024 | Inventor(s): Geunyoung Yoon

Keywords(s): Diagnostic, Ophthalmology, Software, Vision

Category(s): Diagnostic

Algorithm to Increase Dynamic Range of Wavefront Sensor to Correct Eye Defects

Applications: Wavefront sensors are used to diagnoses and correct the optical defects in the eye. This technology increases dynamic range of a conventional wavefront sensor without sacrificing measurement sensitivity for the eye and optical testing.Advantages: The increased dynamic range of wavefront sensor enhances diagnosis and correction of optical...

Published: 5/23/2023 | Inventor(s): Geunyoung Yoon, Gang Pan

Keywords(s): Algorithm, Ophthalmology, Software

Category(s): Diagnostic, Copyright

Measuring the Ocular Point Spread Function Using Adaptive Optics

Brief Description: A system to overcome limitations in lateral resolution found in popular wavefront sensors. Applications: This invention identifies the current Shack-Hartmann type ocular wavefront sensors and proposes a design to combat the model’s limited lateral resolution. The proposed invention is to measure the point spread function...

Published: 2/14/2024 | Inventor(s): Geunyoung Yoon

Keywords(s):

Category(s): Devices, Diagnostic

Scanning Optical System for a Large Axial Scan Depth Anterior Segment Optical Coherence Tomography (OCT)

Brief Description: A system to improve vision care accommodation and intraocular lens development. Applications: This invention identifies the two limitations associated with the traditional telecentric scan that most of the commercial anterior segment optical coherence tomography (OCT) systems use and proposes a novel design to tackle...

Published: 2/14/2024 | Inventor(s): Geunyoung Yoon

Keywords(s):

Category(s): Devices, Diagnostic