Results 31 to 40 of about 2,198,954 (282)

Accuracy of Intraocular Lens Power Estimation in Eyes Having Phacovitrectomy for Rhegmatogenous Retinal Detachment [PDF]

open access: yes, 2014
Purpose: To evaluate the accuracy of intraocular lens power estimation in eyes having phacovitrectomy for rhegmatogenous retinal detachment. Methods: Retrospective case review of 100 consecutive eyes that underwent phacovitrectomy for rhegmatogenous ...
Stephenson, John   +2 more
core   +1 more source

COMPARISON OF OPTICAL AND ULTRASOUND BIOMETRY MEASUREMENTS IN EMMETROPIC AND MYOPIC EYES [PDF]

open access: yesEgyptian Journal of Clinical Ophthalmology, 2020
Purpose: to compare optical biometer (IOL Master) and ultrasound biometry in emmetropic andmyopic eyes as regards the measurements of axial length (AL), anterior chamber depth (ACD) andintraocular lens (IOL) power.
Mostafa, E., El Saman, I.
doaj   +1 more source

Quality of ultrasound biometry obtained by local health workers in a refugee camp on the Thai-Burmese border. [PDF]

open access: yes, 2012
Objective: In a refugee camp on the Thai–Burmese border, accurate dating of pregnancy relies on ultrasound measurements obtained by locally trained health workers.
Wah, N   +22 more
core   +1 more source

Broadband Backhaul Communication for Stratospheric Platforms: The Stratospheric Optical Payload Experiment (STROPEX) [PDF]

open access: yes, 2006
A high bitrate optical downlink was performed by the stratospheric optical payload experiment (STROPEX), a part of the EU CAPANINA project. The STROPEX objectives were to design and build the necessary hardware to demonstrate an optical backhaul downlink
Knapek, Markus   +9 more
core   +1 more source

Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]

open access: yes, 2007
Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll   +13 more
core   +1 more source

Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS-OP) [PDF]

open access: yes, 2007
Optical LEO downlinks from the Japanese OICETS to the optical ground station built by the German Aerospace Center (DLR) near Munich have been performed. This was the first optical LEO downlink on European grounds.
Perlot, Nicolas   +13 more
core   +1 more source

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

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]

open access: yes, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +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

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

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