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A Review of Cascaded Metasurfaces for Advanced Integrated Devices.
Micromachines (Basel)
December 2024
State Key Laboratory of Precision Measuring Technology & Instruments, Tianjin University, Tianjin 300072, China.
This paper reviews the field of cascaded metasurfaces, which are advanced optical devices formed by stacking or serially arranging multiple metasurface layers. These structures leverage near-field and far-field electromagnetic (EM) coupling mechanisms to enhance functionalities beyond single-layer metasurfaces. This review comprehensively discusses the physical principles, design methodologies, and applications of cascaded metasurfaces, focusing on both static and dynamic configurations.
View Article and Find Full Text PDFComparison of Short-Term Clinical Outcomes After Implantation of Two Monofocal, Aspheric Intraocular Lenses.
Diagnostics (Basel)
December 2024
Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
Objectives: This study compared the visual outcomes and optical quality of two monofocal, aspheric intraocular lenses (IOLs; CT LUCIA 621P, Carl Zeiss Meditec; Eyhance ICB00, Johnson & Johnson Vision) by evaluating visual acuity, contrast sensitivity, and higher-order aberrations 1 month post-cataract surgery.
Methods: In this retrospective, comparative study, 120 eyes (72 patients) that underwent cataract surgery with either CT LUCIA 621P (Lucia group) or Eyhance ICB00 (Eyhance group) implantation (60 eyes/group) were retrospectively investigated. Visual acuity at various distances and defocus curves were measured 1 month postoperatively.
Retinal Dystrophy Associated with Homozygous Variants in .
Genes (Basel)
December 2024
Institute of Medical Molecular Genetics, University of Zurich, 8952 Schlieren, Switzerland.
: Neural retina leucine zipper (NRL) is a transcription factor involved in the differentiation of rod photoreceptors. Pathogenic variants in the gene encoding NRL have been associated with autosomal dominant retinitis pigmentosa and autosomal recessive clumped pigmentary retinal degeneration. Only a dozen unrelated families affected by recessive -related retinal dystrophy have been described.
View Article and Find Full Text PDFPoint spread function estimation with computed wavefronts for deconvolution of hyperspectral imaging data.
Sci Rep
January 2025
Hannover Centre for Optical Technologies (HOT), Leibniz University Hannover, Hannover, Germany.
Hyperspectral imaging (HSI) systems acquire images with spectral information over a wide range of wavelengths but are often affected by chromatic and other optical aberrations that degrade image quality. Deconvolution algorithms can improve the spatial resolution of HSI systems, yet retrieving the point spread function (PSF) is a crucial and challenging step. To address this challenge, we have developed a method for PSF estimation in HSI systems based on computed wavefronts.
View Article and Find Full Text PDFAberrant regeneration of third nerve combined with sixth nerve palsy in the setting of trauma: surgical results.
Strabismus
January 2025
Advanced Eye Centre, PGIMER, Chandigarh, India.
: Aberrant regeneration of the third nerve is a known entity after trauma. It is important to recognize signs of aberrant regeneration and keep lid aperture disparity in mind before choosing the surgical procedure in such cases. Surgical procedure in these cases is often customized on case-to-case basis.
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