Results 1 to 10 of about 106,115 (267)
Modern Digital technology and its role in Cinematography using available light [PDF]
Maǧallaẗ Al-Turāṯ wa Al-Taṣmīm, 2022 the use of available light (it is any natural or artificial light or a mixture of them) is an artistic phenomenon where all types of available light can be used dramatically and adapted by the director of photography so that he can convey the dramatic ...
Maged Mahmoud +2 more
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Grey Filter Contact Lens as Therapeutic Option for Acquired Reduced Binocular Visual Performance
British and Irish Orthoptic Journal, 2021 Disturbing binocular problems can be too complex to be treated in such a way that comfortable binocular single vision is restored. The grey filter contact lens could offer a safe and clinically useful way to help these patients. Background: In unilateral
Hans van Vliet +5 more
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Negative Index Metamaterial Lens for Subwavelength Microwave Detection
Sensors, 2021 Metamaterials are engineered periodic structures designed to have unique properties not encountered in naturally occurring materials. One such unusual property of metamaterials is the ability to exhibit negative refractive index over a prescribed range ...
Srijan Datta +6 more
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Trifocal Intraocular Lens Implantation to Treat Visual Demands in Mongolian Patients
Central Asian Journal of Medical Sciences, 2022 Objective: Intraocular lens (IOL) implants are artificial lenses which helps to clear up the vision after cataract surgery. In this work, we aimed to compare the monofocal and trifocal IOL implantation during phacoemulsification.
Narangarav Gunchin-Ish +2 more
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Journal of Ophthalmic & Vision Research, 2022 Purpose: To evaluate the ray tracing method's accuracy employing Okulix ray tracing software and thin-lens formulas to calculate intraocular lens (IOL) power using a swept-source optical coherence tomography (SS-OCT) biometer (OA2000).
Reza Ghaffari +5 more
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IET Microwaves, Antennas & Propagation, 2023 This study proposes an analytical formulation in complex coordinates to synthesise three‐dimensional single‐shell dielectric lens surfaces. An exact formulation based on geometrical optics is developed, and the synthesis problem is modelled as a non ...
Aline Rocha deAssis +2 more
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AUTOMATION OF LENSES CENTERING AT GLUING IN THE FRAME [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2015 This paper discusses the causes of lenses decentration at their gluing in the frame. We give the dependences of displacement value of the centers of curvature for the lens working surfaces from the base frame axis on the primary technological errors of ...
B. D. Bao, S. M. Latyev, R. Theska
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Türk Oftalmoloji Dergisi, 2013 Purpose: To evaluate the effects of different lens designs on visual quality among soft spherical contact lens users. Material and Method: Forty eyes of twenty patients from our contact lens unit were included in this study.
Mustafa Demir +2 more
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Insight into small eyes: a practical description from phenotypes presentations to the management [PDF]
International Journal of OphthalmologyThis narrative review aimed to have an algorithmic approach to microphthalmos by a systematic search. The definition can be related to a number of special phenotypes.
Sana Niazi +4 more
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Gradient Index Metasurface Lens for Microwave Imaging
Sensors, 2022 This paper presents the design, simulation and experimental validation of a gradient-index (GRIN) metasurface lens operating at 8 GHz for microwave imaging applications. The unit cell of the metasurface consists of an electric-LC (ELC) resonator.
Srijan Datta +2 more
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