Results 81 to 90 of about 107,423 (339)
Prescripción de lente de contacto en niños de Las Tunas
Revista Electrónica Dr. Zoilo E. Marinello Vidaurreta, 2016 Fundamento:el empleo de lentes de contacto se ha incrementado a nivel mundial; en la actualidad su uso no se restringe solamente a la corrección óptica, sino que se utilizan con fines terapéuticos, ya que generan comodidad y estética en múltiples ...
Yusimy Agüero Viamontes +2 more
doaj
Phakic Intraocular Lenses An Overview
Delhi Journal of Ophthalmology, 2013 Currently, there are four general approaches to correct refractive errors: refractive corneal surgery, crystalline lens surgery, and implantation of an intraocular lens (IOL) in the anterior or posterior chamber.
Sana Ilyas Tinwala, J S Titiyal
doaj +1 more source
Method of forming aperture plate for electron microscope [PDF]
, 1974 An electron microscope is described with an electron source a condenser lens having either a circular aperture for focusing a solid cone of electrons onto a specimen or an annular aperture for focusing a hollow cone of electrons onto the specimen.
Heinemann, K.
core +1 more source
Light-driven liquid crystalline nonlinear oscillator under optical periodic forcing
, 2007 An all-optically driven strategy to govern a liquid crystalline collective molecular nonlinear oscillator is discussed. It does not require external feedbacks of any kind while the oscillator and a time-depending perturbation both are sustained by ...
A. Pikovsky +5 more
core +2 more sources
Colloidal Crack Sintering Lithography for Light‐Induced Patterning of Particle Assemblies
Advanced Functional Materials, EarlyView.Colloidal crack sintering lithography (CCSL) is a microfabrication technique that uses light‐induced photothermal heating to trigger sintering and controlled cracking in polymer colloidal assemblies. Local structural changes generate microchannels and patterns, enabling direct writing of diverse topographic motifs.
Marius Schoettle +2 more
wiley +1 more source
Indian Journal of Ophthalmology, 1998 In the presence of proliferations anteriorly, adequate excision of the vitreous base is essential. To enable a good vitreous base excision, removal of lens often becomes necessary as it may be damaged while attempting to remove peripheral vitreous.
Natarajan S +2 more
doaj
Advanced Functional Materials, EarlyView.A spatiotemporal plasma–mediated laser processing approach is developed to fabricate ultrahigh–aspect ratio nanochannel arrays and corresponding perovskite nanowire arrays within transparent materials for optoelectronics devices. The laser‐fabricated nanochannels serve as templates for controlled perovskite infiltration and crystallization, enabling ...
Taijin Wang +3 more
wiley +1 more source
Migrated subconjunctival crystalline lens: a traumatic phacocele [PDF]
, 2020 Swechya Neupane +2 more
openalex +1 more source
Advanced Functional Materials, EarlyView.The concept of foulant particle manipulation and detachment from active microfiltration membranes via voltage‐driven vibrations is introduced. Actuator components are initially integrated onto the filtration membranes using an airbrush spray printing technique.
Irem Gurbuz, Hanieh Bazyar, Andres Hunt
wiley +1 more source
Multimodal Structural Color Graphics Based on Colloidal Photonic Microdome Arrays
Advanced Functional Materials, EarlyView.A hybrid photonic system combining colloidal crystals and microscale domes is designed to achieve four switchable optical states via the interplay of Bragg reflection and TIR interference. The graphics composed of the photonic microdome arrays provide tunable, angle‐sensitive structural coloration and concealed‐to‐revealed transitions, offering a ...
Jun‐Gu Kang +4 more
wiley +1 more source