Results 1 to 10 of about 14,035 (212)
Characterization of Monochromatic Aberrated Metalenses in Terms of Intensity-Based Moments
Nanomaterials, 2021 Consistent with wave-optics simulations of metasurfaces, aberrations of metalenses should also be described in terms of wave optics and not ray tracing. In this respect, we have shown, through extensive numerical simulations, that intensity-based moments
Sorina Iftimie +2 more
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Changes of high order aberrations after photorefractive keratectomy (PRK) and FemtoLASIK
Российский офтальмологический журнал, 2022 Purpose: a comparative study of corneal and total wavefront aberration changes after traditional PRK and FemtoLASIK.Material and methods. Corneal and total wavefront aberrations were studied on OPD-Scan III aberrometer (Nidek) in 63 patients (126 eyes ...
N. V. Khodzhabekyan +4 more
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Higher order aberration comparison between two aspherical intraocular lenses:MC6125AS and Akreos advanced optics [PDF]
International Journal of Ophthalmology, 2015 AIM: To compare higher order aberrations in two aspherical intraocular lenses (IOLs):Akreos advanced optics (AO) and Dr. Schmidt Microcrystalline 6125 aspheric anterior surface (MC6125AS) with each other.METHODS: Forty eyes of 39 patients underwent ...
Mohammad Taher Rajabi +6 more
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Indian Journal of Ophthalmology, 2022 Purpose: To assess impact of tear optics on repeatability of a Scheimpflug device with a Hartmann Shack aberrometer and a ray tracing aberrometer. Methods: One hundred healthy and 100 postrefractive surgery eyes underwent dry eye evaluation including ...
GairikKundu +6 more
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Recent advances of wide-angle metalenses: principle, design, and applications
Nanophotonics, 2021 Optical imaging systems, like microscopes, cameras, and telescopes, continue to expand the scope of human observation of the world. As one of the key indicators of imaging systems, the field-of-view (FOV) is often limited by coma aberration. Expanding it
Luo XianGang +5 more
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Optical Pupil Shift Correction Method for Large Ground-Based Optical Telescopes
Applied Sciences, 2023 Cassegrain telescopes with larger apertures suffer significant optical pupil shifting errors caused by gravity and temperature gradients. This study constructs an optical model of a large Cassegrain telescope and a method to calculate and compensate its ...
Honghao Wang +4 more
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Nature Communications, 2023 Visible light optical elements such as lenses and mirrors have counterparts for X-rays. In the visible regime, a variable focusing power can be achieved by an Alvarez lens which consists of a pair of inline planar refractors with a cubic thickness ...
Vishal Dhamgaye +6 more
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High order aberration and straylight evaluation after cataract surgery with implantation of an aspheric, aberration correcting monofocal intraocular lens [PDF]
International Journal of Ophthalmology, 2015 AIM:To evaluate the quality of vision in respect to high order aberrations and straylight perception after implantation of an aspheric, aberration correcting, monofocal intraocular lens (IOL).METHODS:Twenty-one patients (34 eyes) aged 50 to 83y underwent
Florian T A Kretz +3 more
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BMC Ophthalmology, 2017 Background Intrascleral fixation of an intraocular lens (IOL) is used in eyes that lack capsular support. The aim of the study is to determine whether a larger optical diameter IOL will decrease the higher-order aberrations (HOAs) when the haptics are ...
Daisuke Kunita +5 more
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Validation of Mahajan's formula for scaling ocular higher-order aberrations by pupil size
Indian Journal of Ophthalmology, 2020 Purpose: Zernike polynomials for describing ocular higher order aberrations are affected by pupil aperture. The current study aimed to validate Mahajan's formula for scaling Zernike polynomials by pupil size.
Henry B Wallace +2 more
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