Results 31 to 40 of about 58,504 (253)

Three-dimensional tomographic inversion of combined reflection and refraction seismic travel-time data

open access: yes, 2003
A tomographic inversion method is presented for the determination of 3-D velocity and interface structure from a wide range of body-wave seismic traveltime data types.
T. A. Minshull   +8 more
core   +1 more source

Proteomic analysis of corneal astigmatism identifies reduced apolipoprotein A-IV as a candidate biomarker

open access: yesFrontiers in Medicine
IntroductionAstigmatism is a common refractive error associated with myopia, yet its molecular mechanisms remain poorly understood. This study aimed to identify and validate differentially expressed proteins (DEPs) in corneal astigmatism through a label ...
Ximin Wei, Weitao Li, Wei Zhang
doaj   +1 more source

A comparative study of knotless versus knotted transscleral suture-fixated intraocular lens implantation

open access: yesIndian Journal of Ophthalmology, 2022
Purpose: To compare functional outcomes and complication rates of two scleral fixated intraocular lens implantation (SFIOL) techniques. Methods: In this retrospective study, there were 30 eyes of 30 patients who underwent SFIOL implantation for ...
Sami Yilmaz   +2 more
doaj   +1 more source

Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel [PDF]

open access: yes, 2006
Mitigation of index of refraction turbulence (IRT) effects is crucial in long-range atmospheric communication links. Diversity-transmission is one favorable way for fading compensation.
Perlot, Nicolas   +7 more
core   +1 more source

Evaluation of Short-Term Safety and Efficacy of Myopia Correction with a Novel Posterior Chamber Phakic Intraocular Lens

open access: yesOphthalmology and Therapy
Introduction This study aims to evaluate the short-term safety and efficacy of the Loong Crystal®PR lens, a novel posterior chamber phakic intraocular lens (PIOL) that utilizes advanced optical and material designs.
Hui Zhang   +8 more
doaj   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

open access: yesFEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas   +6 more
wiley   +1 more source

Non-traumatic bilateral corneal flap dislocation 20 years after LASIK

open access: yesBMC Ophthalmology
Backgroud This report describes a case of late non-traumatic dislocation of bilateral corneal flaps, occurring 20 years after LASIK surgery. Case presentation A 52-year-old woman underwent LASIK surgery on both eyes 20 years ago.
Dakun Ren   +3 more
doaj   +1 more source

Optimizing photoexcitation conditions for time‐resolved X‐ray solution scattering experiments

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering (TR‐XSS) is a powerful technique to visualize how proteins change their structure in real time after light activation. Selecting the right laser photoexcitation conditions—fluence, excitation geometry, and sample refresh rate—is critical to maximize the experimental signal while avoiding unwanted side effects ...
Matteo Levantino
wiley   +1 more source

Cooperative role of MDSCs and Tregs in alum-induced alloimmune tolerance in corneal transplantation

open access: yesScientific Reports
Alum, a widely used adjuvant, has recently been recognized for its capacity to modulate immune responses beyond classical activation. In this study, we investigated whether alum-induced expansion of myeloid-derived suppressor cells (MDSCs) and their ...
Lifang Li   +6 more
doaj   +1 more source

Prevalence of refractive error in Europe: the European Eye Epidemiology (E(3)) Consortium. [PDF]

open access: yes, 2015
To estimate the prevalence of refractive error in adults across Europe. Refractive data (mean spherical equivalent) collected between 1990 and 2013 from fifteen population-based cohort and cross-sectional studies of the European Eye Epidemiology (E(3 ...
Cumberland, P.M.   +159 more
core   +2 more sources

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