Results 1 to 10 of about 7,247 (289)

Comparison of applanation ultrasound biometry with optical biometry for intraocular lens power estimation in cataract surgery and their impact on prediction error

open access: yesKerala Journal of Ophthalmology, 2021
Aim: The aim of this study is to determine the agreement between applanation ultrasound biometry (AUB) and optical biometry using Lenstar 900 for precataract surgery axial length measurement and intraocular lens (IOL) power estimation and their effect on
Merine Paul
doaj   +1 more source

Computing Retinal Contour from Optical Biometry [PDF]

open access: yesOptometry and Vision Science, 2014
To describe a new methodology that derives horizontal posterior retinal contours from partial coherence interferometry (PCI) and ray tracing using the corneal topography.Corneal topography and PCI for seven horizontal visual field eccentricities correspondent to the central 60 degrees of the posterior pole were obtained in 55 myopic eyes.
Ribeiro, Miguel António Faria   +5 more
openaire   +5 more sources

Technical failure rates for biometry between swept-source and older-generation optical coherence methods: a review and meta-analysis

open access: yesBMC Ophthalmology, 2023
Purpose Precise ocular measurements are fundamental for achieving excellent target refraction following both cataract surgery and refractive lens exchange. Biometry devices with swept-source optical coherence tomography (SS-OCT) employ longer wavelengths
Piotr Kanclerz   +2 more
doaj   +1 more source

Refractive surprise after cataract surgery secondary to smeared optics of swept-source optical coherence tomography biometer: a case report

open access: yesBMC Ophthalmology, 2020
Background Inaccurate biometry can lead to the wrong intraocular lens implantation and result in refractive surprise following cataract surgery. It is important to be sceptical of biometry results that do not match the refractive or clinical picture and ...
Francis Carr, Vinod Gangwani
doaj   +1 more source

Eye Biometry Shift after Scleral Buckling Procedure

open access: yesOftalʹmologiâ, 2022
Background. There are a great number publications presenting results of various types of optical and ultrasound biometry before and after scleral buckling (SB).Patients and methods.
A. N. Kulikov   +2 more
doaj   +1 more source

Comparison of ultrasonic pachymetry, with a new optical biometry and tono-pachymetry

open access: yesMedicine Science, 2017
The aim of this study was to compare the measurements of central corneal thickness (CCT) using the CT-1P tonopachymetry and AL-Scan optical biometry with those obtained with ultrasound (US) pachymetry. In this prospective study, CCTs were measured in 100
Haci Murat Sagdik   +3 more
doaj   +1 more source

Refractive Outcome after Phacoemulsification Using Optical Biometry versus Immersion Ultrasound Biometry [PDF]

open access: yesThe Egyptian Journal of Hospital Medicine, 2019
Purpose: To compare refractive outcome after phacoemulsification using optical biometry versus immersion ultrasound biometry (US) .Patients and methods: A prospective, comparative, non-randomized interventional study included 100 eyes divided into 2 groups: Group (A): (Immersion US biometry) included 50 eyes.
Fatma A. Atwa   +3 more
openaire   +1 more source

Comparison of Mean Axial Length Measured by Acoustic Biometry versus Optical Biometry

open access: yesPakistan Journal of Ophthalmology, 2021
Purpose:  To compare the mean axial length measured by acoustic biometry with optical biometry. Design:  Descriptive observational study. Place and Duration of Study:  Department of Ophthalmology Liaquat National Hospital and Medical College, Karachi from November 2018 to April 2019. Methods:   were 246 patients with visually ...
Munira Shakir   +4 more
openaire   +2 more sources

Gender differences in refraction prediction error of five formulas for cataract surgery

open access: yesBMC Ophthalmology, 2021
Objectives To evaluate gender differences in optical biometry measurements and lens power calculations. Methods Eight thousand four hundred thirty-one eyes of five thousand five hundred nineteen patients who underwent cataract surgery at University of ...
Yibing Zhang   +3 more
doaj   +1 more source

Wavefront Derived Refraction and Full Eye Biometry in Pseudophakic Eyes. [PDF]

open access: yesPLoS ONE, 2016
To assess wavefront derived refraction and full eye biometry including ciliary muscle dimension and full eye axial geometry in pseudophakic eyes using spectral domain OCT equipped with a Shack-Hartmann wavefront sensor.Twenty-eight adult subjects (32 ...
Xinjie Mao   +6 more
doaj   +1 more source

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