Results 81 to 90 of about 2,292 (192)

Agreement of a Pyramidal Wavefront-Based Autorefraction with Dry, Cycloplegic, and Subjective Refraction in Myopic Refractive Surgery Candidates

Journal of Current Ophthalmology
Purpose To evaluate the repeatability of a pyramidal wavefront-based refraction (WFR) measurement and its agreement with dry autorefraction (DR), cycloplegic autorefraction (CR), and subjective refraction (SR) in myopic refractive surgery candidates ...
Siamak Zarei-Ghanavati, Marzieh Najjaran, Samira Hassanzadeh, Mehdi Khabazkhoob, Akilesh Gokul, Mohammed Ziaei   +5 more
doaj   +1 more source

Alport Syndrome and Femtosecond Laser-assisted Cataract Surgery

Journal of Ophthalmic & Vision Research, 2020
We report the surgical management of a patient with bilateral anterior lenticonus due to Alport syndrome using femtosecond laser-assisted cataract surgery (FLACS) and the Optiwave Refractive Analysis (ORA) system.
Paz Orts-Vila, Francisco Amparo, José Luís Rodríguez-Prats, Pedro Tañá-Rivero   +3 more
doaj   +1 more source

Sampling geometries for ocular aberrometry: A model for evaluation of performance [PDF]

, 2005
The purpose of this work is to outline a simple model to assess the relative merits of different sampling grids for ocular aberrometry and illustrate it with an example. While in traditional Hartmann-Shack setups the sampling grid geometries have been
Bará Viñas, Salvador Xurxo, Walker, Grace, Diaz Santana, Luis   +2 more
core   +1 more source

Comparison Between Aberrometry-Based Binocular Refraction and Subjective Refraction [PDF]

, 2018
Received: 10 April 2018; Accepted: 13 June 2018; Published: 3 August 2018Purpose: We evaluate the efficacy of a new system of binocular refraction, mainly based on ocular aberrometry (EYER) and compare it with the traditional subjective refraction as ...
Batres Valderas, Laura, Carracedo Rodríguez, Juan Gonzalo, Serramito Blanco, María, Carpena Torres, Carlos   +3 more
core   +1 more source

Stereoacuity and Aniseikonia: Evaluation Before and After Bilateral Implantation of Three Types of Presbyopia-Correcting Intraocular Lenses in Uncomplicated Phacoemulsification with Due Consideration of Interocular Differences in Higher Order Aberrations, Axial Lengths, Refractive Errors, and Acuities

Clinical Ophthalmology
Ivana Mravičić,* Selma Lukačević,* Ante Barišić,* Sudi Patel,* Maja Bohač,* Alma Biščević,* Nikica Gabrić* Department of Cataract and Refractive Surgery ...
Mravičić I, Lukačević S, Barišić A, Patel S, Bohač M, Biščević A, Gabrić N   +6 more
doaj  

Ocular Aberrations and Retinal Thickness Variations After Moderate-Term Reading on Electronic Devices by Age

Photonics
Background: This study aims to evaluate subjective visual fatigue and objective optical and morphological changes in ocular structures after intermediate-duration reading on an iPad and an Ebook across different age groups.
María Arcas-Carbonell, Elvira Orduna-Hospital, María Mechó-García, María Munarriz-Escribano, Ana Sanchez-Cano   +4 more
doaj   +1 more source

Asymmetric Thickness Intracorneal Ring Segments for Keratoconus

Clinical Ophthalmology, 2020
Pedro Manuel Baptista,1,2 João Heitor Marques,1 Miguel Mesquita Neves,1 Miguel Gomes,1,2 Luís Oliveira1 1Ophthalmology Department, Centro Hospitalar Universitário Do Porto, Porto, Portugal; 2Instituto De Ciências Biomé ...
Baptista PM, Marques JH, Neves MM, Gomes M, Oliveira L   +4 more
doaj  

iTrace – A Ray Tracing Aberrometer

Delhi Journal of Ophthalmology, 2019
Modern ophthalmology focusses on visual quality and not just visual acuity. The quality of vision is affected by both lower and higher order aberrations.
Ayushi Sinha, Siddhi Goel, Vinay Gupta, Devesh Kumawat, Pranita Sahay   +4 more
doaj   +1 more source

Preoperative measurement vs intraoperative aberrometry for the selection of intraocular lens sphere power in normal eyes

, 2017
James A Davison,1 Richard Potvin2 1Wolfe Eye Clinic, Marshalltown, IA, 2Science in Vision, Akron, NY, USA Purpose: This study aimed to assess the value of intraoperative aberrometry (IA) in determining the intraocular lens (IOL) sphere power in eyes ...
Davison JA, Potvin R
core  

Effect of Small Angle Misalignments on Ocular Wavefront Zernike Coefficients

Photonics
Purpose: To assess the possible impact of minor changes in fixation on wavefront measurements as a potential constraint in detecting subtle temporal variations in ocular wavefront error.
Ebrahim Safarian Baloujeh, Francisco J. Ávila, José M. González-Méijome   +2 more
doaj   +1 more source