Results 21 to 30 of about 308,967 (294)
Effects of microwave irradiation on the parameters of hydrogel contact lenses [PDF]
, 2003 Ten brands of hydrogel contact lenses were selected from five of the six British Approved Name lens classification groups to test in vitro the effects of repeated heat disinfection by means of microwave irradiation.
Crabbe, A, Thompson, P
core +1 more source
Solution Deposited Optical Waveguide Lens [PDF]
, 1989 The development of a solution deposited optical waveguide lens, whose focusing effect is produced by an effective index gradient with a hyperbolic secant variation, is described.
Hewak, Daniel W., Lit, John W.Y.
core +2 more sources
Optimization of Zoom Lens with Discrete State of Liquid Lens Elements by Using Genetic Algorithm
Advances in Materials Science and Engineering, 2015 This paper is to employ liquid lens elements to design a lens with zoom function by using the genetic algorithm (GA) optimization. The liquid lens elements used in the proposal can apply voltage adjustment to generate the electrical field that induces ...
Cheng-Mu Tsai
doaj +1 more source
Nigerian Journal of Medicine, 2022 Background: Axial length, lens thickness and anterior chamber diameter are valuable parameters used in determining the refractive status of the eye.
Ernest Ikechukwu Ezeh +2 more
doaj +1 more source
, 2002 In an earlier paper we introduced the concept of the perfect lens which focuses both near and far electromagnetic fields, hence attaining perfect resolution.
Born M. +5 more
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Frontiers in Medicine, 2022 ObjectiveTo observe the differences in ocular biology between premature infants who had undergone retinal laser photocoagulation (LP) for retinopathy of prematurity (ROP) and full-term infants and to investigate the relationships between these ...
Xianlu Zeng +8 more
doaj +1 more source
Uso de superficies free-form para simular los cambios locales de indice de refracción en lentes de plástico a partir de su medida polariscópica [PDF]
, 2017 In this paper we propose a method to convert the local variations of refractive index into local changes of one surface of the lens, which then can then be described as a free-form surface, easy to introduce in conventional simulation tools. The proposed
Arasa Marti, Jose +2 more
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Biometric indicators of eyes with occult lens subluxation inducing secondary acute angle closure
BMC Ophthalmology, 2020 Background To compare the anterior biometrics in eyes with secondary acute angle closure induced by occult lens subluxation (ASAC-LS), misdiagnosed as acute primary angle closure (APAC) at the first visit with APAC, chronic primary angle closure glaucoma
Xiaoli Xing +6 more
doaj +1 more source
Laue gamma-ray lenses for space astrophysics:status and prospects [PDF]
, 2010 We review feasibility studies, technological developments and astrophysical prospects for Laue lenses devoted to hard X-/gamma-ray astronomy observations.Comment: 26 pages, 24 figures. Published in a special issue (Volume 2010 (2010), Article ID 215375,
Frontera, Filippo, Von Ballmoos, Peter
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Agreement between ANTERION and IOLMaster700 in ocular biometric measurements in a Brazilian population [PDF]
Revista Brasileira de OftalmologiaObjective: To evaluate the agreement of biometric parameters measured by the ANTERION and IOLMaster700 devices in a Brazilian population, considering statistical differences and their clinical relevance.
Luís Armando Vitorino Alves de Souza Gondim +4 more
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