Results 151 to 160 of about 9,035 (308)

Corneal power modelling with OCT data – Thin and thick lens paraxial models versus raytracing

open access: yesActa Ophthalmologica, EarlyView.
Abstract Background Evaluating keratometric power with Zeiss index (PKZ), paraxial thick cornea power (Gullstrand [PG]) and power referenced to the front (PFV) and back vertex plane (PBV) and raytracing power (PR), and modelling the deviation from PKZ with a multivariable linear prediction model.
Achim Langenbucher   +4 more
wiley   +1 more source

Micro-machined membrane deformable mirrors for cryogenic adaptive optics [PDF]

open access: yes, 2002
In this Thesis, the suitability of 37 actuator Micro-machined membrane deformable mirrors (MMDM) for adaptive optics at cryogenic temperatures is evaluated. A method is described to safely cool MMDMs to 78K. The initial surface figures of three MMDMs are
Dyson, H.M., Dyson, Harold Michael
core  

Patient‐reported outcomes and visual function after four refractive strategies in cataract surgery: A randomized controlled trial

open access: yesActa Ophthalmologica, EarlyView.
Abstract Purpose To evaluate patient‐reported outcome measures (PROMs) and visual function across four groups of public cataract patients: emmetropia, mini‐monovision, monovision with partial‐range of field (RoF) narrow intraocular lenses (IOLs) and patients implanted with partial‐RoF extended IOLs.
Anne Guldhammer Skov   +4 more
wiley   +1 more source

Real-time dynamic monochromatic ocular wavefront aberrations during accommodation: preliminary results

open access: yes, 2012
It has been well known that wavefront aberrations of the eye are dynamic, changing continuously over time due to factors like accommodation, blinking, pupil size, tear film stability, etc.
Nascimento, Sérgio M. C.   +9 more
core   +1 more source

Wave Tracing: Generalizing The Path Integral To Wave Optics

open access: yesComputer Graphics Forum, EarlyView.
Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley   +1 more source

Wavefront aberrations following laser in situ keratomileusis and refractive lens exchange corrections for hypermetropia

open access: yes, 2004
Purpose: To compare the magnitude of aberrations in eyes after elective hypermetropic laser in situ keratomileusis (LASIK) and refractive lens exchange (clear lens replacement).\ud Methods: Forty-nine patients (92 eyes) had hypermetropic LASIK and 28 ...
Ma, Luxin   +4 more
core  

Hyperspectral tomographic diffractive microscopy: Development and applications

open access: yesJournal of Microscopy, EarlyView.
Abstract Tomographic Diffractive Microscopy (TDM) provides label‐free three‐dimensional imaging of transparent samples with resolution surpassing confocal limits. At IRIMAS, successive instrumental developments since 2009 have enhanced TDM capabilities through transmission, reflection, isotropic, polarisation‐sensitive, and dual‐view configurations ...
Leonardo Pestana Legori   +4 more
wiley   +1 more source

Wavefront Aberration Introduced by DMDs

open access: yesProceedings of the International Display Workshops, 2023
Son, Jung-Young   +4 more
openaire   +1 more source

Measurement of aberrations of a solid elastic lens using a point-diffraction interferometer [PDF]

open access: yes, 2010
There has been a considerable recent increase in the use of variable focal length lenses (VFLLs), especially as microlenses in photographic objectives, endoscopes, microscope objectives, etc. One distinguishing feature of these VFLLs is the presence of a
ESTEBAN RUEDA SORIANO   +2 more
core  

Multipoint Pacing Versus Cardiac Resynchronization Therapy in Heart Failure: A Systematic Review and Meta‐Analysis

open access: yesPacing and Clinical Electrophysiology, EarlyView.
ABSTRACT Introduction Multipoint pacing (MPP) delivers sequential stimuli from multiple left‐ventricular electrodes, potentially improving cardiac resynchronization therapy (CRT) response versus conventional biventricular pacing (BiV). We performed an updated systematic review and meta‐analysis to synthesize contemporary evidence.
Fahad Muhammad   +4 more
wiley   +1 more source

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