Results 81 to 90 of about 88,327 (313)

Correlation Between Keratometric and Refractive Astigmatism in Pseudophakes

Clinical Ophthalmology, 2021
Shavini Athukorala,1 Neal Kansara,2 Erik Lehman,3 Seth M Pantanelli1 1Department of Ophthalmology, Penn State College of Medicine, Hershey, PA, USA; 2Department of Ophthalmology, Baylor College of Medicine, Houston, TX, USA; 3Department of Public Health ...
Athukorala S, Kansara N, Lehman E, Pantanelli SM   +3 more
doaj  

Evaluation of Opposite Clear Corneal Incision in Controlling Astigmatism in Cataract Patients Undergoing Phacoemulsification Surgery

Delhi Journal of Ophthalmology, 2016
Aim: To evaluate the role of clear corneal incision combined with opposite clear corneal incision in controlling astigmatism in patients undergoing phacoemulsification surgery for cataract. Design: Prospective clinical study.
J. S. Bhalla, Meenakshi Rani, Surbhi Gupta   +2 more
doaj   +1 more source

Central and mid-peripheral corneal astigmatism in an elderly population: a retrospective analysis of Scheimpflug topography results

Scientific Reports, 2021
Implantation of toric intraocular lenses (IOLs) has become standard in the correction of corneal astigmatism. The IOL selection is based on keratometric measurements of the central cornea.
Grzegorz Łabuz, Dorottya Varadi, Ramin Khoramnia, Gerd U. Auffarth   +3 more
doaj   +1 more source

Repeatability of the subjective refraction [PDF]

, 2017
Actualment, l’error refractiu és considerat un problema de salut a nivell mundial. Un examen refractiu precís és vital per obtenir la millor agudesa visual possible i portar a terme correctament altres exàmens visuals.
Vázquez López, Meritxell
core  

Rotationally induced vortices in optical cavity modes [PDF]

, 2009
We show that vortices appear in the modes of an astigmatic optical cavity when it is put into rotation about its optical axis. We study the properties of these vortices and discuss numerical results for a specific realization of such a set-up. Our method
Abramochkin E G, Gerard Nienhuis, Guilleman V, Habraken S J M, Osborne D V, Siegman A E, Singh R K, Staliunas K, Steven J M Habraken, Visser J   +9 more
core   +1 more source

Truncating Variants in RREB1 Cause a Novel RASopathy Syndrome of Congenital Heart Disease, Genitourinary Malformations, and Developmental Delay

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT The interstitial 6p microdeletion syndrome is characterized by dysmorphic facies and structural heart, kidney, brain, and musculoskeletal differences. RREB1 haploinsufficiency and consequent abnormal RAS‐MAPK pathway signaling have been proposed as a driver of the disease phenotype; however, apart from a single case report, the phenotype of ...
Alanna Strong, Caoimhe McKenna, Karen Stals, Antonio Vitobello, Mathilde Renaud, Claudine Rieubland, Michel Guipponi, Christophe Philippe, Paul Vrana, Alisa Gaskell, A. Micheil Innes, Alyssa L. Rippert, Rebecca Ahrens‐Nicklas, Elizabeth Bhoj, Kiersten Keller, Bimal P. Chaudhari, Brandon S. Stone   +16 more
wiley   +1 more source

Lyot-based Low Order Wavefront Sensor: Implementation on the Subaru Coronagraphic Extreme Adaptive Optics System and its Laboratory Performance

, 2014
High throughput, low inner working angle (IWA) phase masks coronagraphs are essential to directly image and characterize (via spectroscopy) earth-like planets.
Baudoz, Pierre, Guyon, Olivier, Jovanovic, Nemanja, Kudo, Tomoyuki, Kuhn, Jonas G, Martinache, Frantz, Serabyn, Eugene, Singh, Garima   +7 more
core   +2 more sources

Preschool Children Exhibit Evident Compensatory Role of Internal Astigmatism in Distribution of Astigmatism: The Nanjing Eye Study.

Investigative Ophthalmology and Visual Science, 2019
Purpose To determine the prevalence and associated risk factors for total, corneal, and residual astigmatism and to evaluate the relations between components of astigmatism in Chinese preschool children. Methods In the population-based, cross-sectional
Zijin Wang, Dan Huang, Xuejuan Chen, Hui Zhu, Qigang Sun, Yue Wang, xiaohan zhang, Yue Wang, Leili Zhai, Chenyang Wang, Hu Liu   +10 more
semanticscholar   +1 more source

Patient With Prolidase Deficiency due to an Homozygous PEPD Variant, Induced by Paternal Uniparental Isodisomy of Chromosome 19

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Uniparental disomy (UPD) is a rare phenomenon in which both copies of a chromosome are inherited from a single parent. This can lead to genomic imprinting disorders and recessive disorders due to the presence of recessive pathogenic variants in both alleles. Additionally, depending on the mechanisms by which UPD occurs, mosaic aneuploidies may
Marta Carreño‐Hidalgo, Raquel Muñoz‐Siles, Vanesa López‐González, Lidia Carreño‐Gago, Lluís Armengol Dulcet   +4 more
wiley   +1 more source

Near visual function measured with a novel tablet application in patients with astigmatism

Clinical and Experimental Optometry, EarlyView., 2020
Clinical relevance While the clinical focus of performance metrics is traditionally based on visual acuity, research from the field of visual impairment has demonstrated that metrics such as reading speed and critical print size correlate much more strongly with subjective patient reported outcomes and assessed ability in real‐world tasks.
Ananya Datta, Kathryn Richdale, Erin S Tomiyama, Chuan Hu, Anna‐Kaye M Logan, Kelsea Skidmore, Moriah A Chandler, Eric R Ritchey, James S Wolffsohn   +8 more
wiley   +1 more source