Results 161 to 170 of about 45,422,298 (247)
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Correcting lens system for perimetry
Ophthalmic and Physiological Optics, 1995Summary A lens system to correct for both refractive error and perimeter test distance is frequently needed for accurate perimetry. Patients often lack appropriate near vision corrections and full aperture trial case lenses, when they are available, barely cover the central 30° and hence frequently produce lens rim artefacts.
Henson, David B., Earlam, Richard A.
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Lens Opacities Classification System
Archives of Ophthalmology, 1988The Lens Opacities Classification System (LOCS) is a simple system for classifying age-related human lens opacities at the slit lamp or in retroilluminated and slit-lamp photographs. The system employs a set of standard Neitz CTR retroilluminated black-and-white photographs for classification of cortical and posterior subcapsular cataracts and a single
L T, Chylack +4 more
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Analysis of Perturbed Lens Systems
Applied Optics, 1970In tolerancing a lens system, it is necessary to know the effects of fabrication and alignment errors on the image quality. In this report, the wavefront aberration due to a small parameter perturbation is derived. This may be calculated from ray tracing through the nominal system only, and its linearity is extremely useful for tolerancing. The results
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Design of a Lens System for Micro Lens Lithography
International Optical Design, 2006Design details of a micro lens lithography system are discussed. This system contains three micro lens arrays with aspheric surfaces. We simulate and optimize this system with geometrical and diffraction-based methods using available software.
Hamid Reza Fallah, Ayatollah Karimzadeh
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Journal of Perioperative Practice, 2007
Surgeons have always been ready to adapt advances in technology into their practice. The discovery by Wilhelm Roentgen of X-rays in 1885 was applied within weeks of its publication to the diagnosis of fractures and the location of foreign bodies. The development of the electric light bulb by Edison enabled Max Nitze, Professor of Urology in Berlin, to ...
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Surgeons have always been ready to adapt advances in technology into their practice. The discovery by Wilhelm Roentgen of X-rays in 1885 was applied within weeks of its publication to the diagnosis of fractures and the location of foreign bodies. The development of the electric light bulb by Edison enabled Max Nitze, Professor of Urology in Berlin, to ...
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Applied Optics, 1989
Situations exist in the area of optical information processing where one may choose between either a single large lens or many small lenslets side by side. The choice will be influenced by many parameters, among others by the space-bandwidth product SW. The SW is an upper limit for the number of data channels which can be handled in parallel. Hence, we
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Situations exist in the area of optical information processing where one may choose between either a single large lens or many small lenslets side by side. The choice will be influenced by many parameters, among others by the space-bandwidth product SW. The SW is an upper limit for the number of data channels which can be handled in parallel. Hence, we
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Smart Contact Lens Systems for Ocular Drug Delivery and Therapy
Advanced Drug Delivery Reviews, 2023Geon-Hui Lee +2 more
exaly
Optic replacement in a novel modular intraocular lens system
Clinical and Experimental Ophthalmology, 2016Jia J. Guan +7 more
semanticscholar +1 more source