Three-dimensional microscopy suffers from sample-induced aberrations that reduce the resolution and lead to misinterpretations of the object distribution. In this paper, the resolution of a three-dimensional fluorescent microscope is significantly improved by introducing an amplitude diversity in the form of a binary amplitude mask positioned in several different orientations within the pupil, followed by computer processing of the diversity images. The method has proved to be fast, easy to implement, and cost-effective in high-resolution imaging of casper fli:GFP zebrafish.
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http://dx.doi.org/10.1364/OE.26.014832 | DOI Listing |
Int J Ophthalmol
September 2024
Department of Ophthalmology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, China.
Aim: To describe the practice patterns of intravitreal injections (IVIs) among ophthalmologists in China.
Methods: This was a cross-sectional online survey. Ophthalmologists who had performed accumulated more than 100 injections were contacted by the Brightness Center, a hospital-based national network, to complete an anonymous, 24-question, internet-based survey.
Przegl Epidemiol
September 2024
Department of Neurology, Medical University of Bialystok, Poland, Polska.
In this article, we describe the case of a 70-year-old man whose diagnosis of a brain meningioma was hindered by a SARS-CoV-2 infection. The patient, who had been vaccinated twice with the AstraZeneca COVID-19 vaccine, was admitted to Temporary Hospital No. 2, University Hospital (Białystok, Poland) with a positive PCR test result for SARS-CoV-2.
View Article and Find Full Text PDFOphthalmic Physiol Opt
November 2024
Dept. Física Aplicada, Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
Purpose: Investigations into the correction of presbyopia have considered lens design, clinical implications and the development of objective metrics such as the visual Strehl ratio. This study investigated the Jacobi-Fourier phase mask as an ophthalmic element in the correction of presbyopia. The goal was to develop a contact or intraocular lens whose performance was largely insensitive to changes in pupil diameter.
View Article and Find Full Text PDFJ Vis
August 2024
School of Optometry and Vision Science, The University of Auckland, Auckland, New Zealand.
Adaptation to flickering/dynamic noise improves visual acuity for briefly presented stimuli (Arnold et al., 2016). Here, we investigate whether such adaptation operates directly on our ability to see detail or by changing fixational eye movements and pupil size or by reducing visual crowding.
View Article and Find Full Text PDFIEEE Trans Vis Comput Graph
August 2024
Systems with occlusion capabilities, such as those used in vision augmentation, image processing, and optical see-through head-mounted display (OST-HMD), have gained popularity. Achieving precise (hard-edge) occlusion in these systems is challenging, often requiring complex optical designs and bulky volumes. On the other hand, utilizing a single transparent liquid crystal display (LCD) is a simple approach to create occlusion masks.
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