Results 31 to 40 of about 15,879 (217)

Numerical dispersion compensation for Partial Coherence Interferometry and Optical Coherence Tomography

open access: goldOptics Express, 2001
Dispersive samples introduce a wavelength dependent phase distortion to the probe beam. This leads to a noticeable loss of depth resolution in high resolution OCT using broadband light sources. The standard technique to avoid this consequence is to balance the dispersion of the sample byarrangingadispersive materialinthereference arm.
Adolf F. Fercher   +5 more
openalex   +3 more sources

Can Partial Coherence Interferometry be Used to Determine Retinal Shape? [PDF]

open access: greenOptometry and Vision Science, 2011
To determine likely errors in estimating retinal shape using partial coherence interferometric instruments when no allowance is made for optical distortion.Errors were estimated using Gullstrand no. 1 schematic eye and variants which included a 10 diopter (D) axial myopic eye, an emmetropic eye with a gradient-index lens, and a 10.9 D accommodating eye
David A. Atchison, W. N. Charman
openalex   +4 more sources

Comparison of Biometry Measurements Using Standard Partial Coherence Interferometry versus New Scheimpflug Tomography with Integrated Axial Length Capability [PDF]

open access: yesClinical Ophthalmology, 2020
Jorge Selem Haddad,1,2 Eliza Barnwell,1 Karolinne Maia Rocha,1 Renato Ambrosio Jr,2,3 George O Waring IV4 1Storm Eye Institute, Medical University of South Carolina, Charleston, SC, USA; 2Universidade Federal de São Paulo, São Paulo, Brazil;
Haddad JS   +4 more
doaj   +2 more sources

Dispersion Effects in Partial Coherence Interferometry: Implications for Intraocular Ranging [PDF]

open access: bronzeJournal of Biomedical Optics, 1999
In nondispersive media, the minimum distance that can be resolved by partial coherence interferometry (PCI) and optical coherence tomography (OCT) is inversely proportional to the source spectral bandwidth. Dispersion tends to increase the signal width and to degrade the resolution.
Christoph K. Hitzenberger   +3 more
openalex   +3 more sources

Study of impact of diabetes mellitus on anterior chamber depth as detected by partial coherence laser interferometry

open access: greenJournal of Marine Medical Society, 2015
Aim: A n observational cross-sectional study conducted to analyze the impact of diabetes mellitus on anterior chamber depth. Materials and methods: 100 Consecutive diabetic patients aged 40 years and above who attended the Department of Ophthalmology of ...
S Agrawal, G Premnath
doaj   +2 more sources

Comparison of axial length using a new swept-source optical coherence tomography-based biometer - ARGOS with partial coherence interferometry- based biometer -IOLMaster among school children. [PDF]

open access: yesPLoS ONE, 2018
PurposeTo compare the axial length measurements obtained by a new swept source optical coherence tomography based biometer-ARGOS with partial coherence interferometry based biometer -IOL master in school children between the ages of 11-17.MethodsA ...
Jameel Rizwana Hussaindeen   +7 more
doaj   +2 more sources

Accuracy of intraocular lens power calculation using partial coherence interferometry and OKULIX ray tracing software in high myopic cataract patients

open access: diamondDelta Journal of Ophthalmology, 2017
Purpose The aim of the study was to evaluate the accuracy of intraocular lens (IOL) power calculation using partial coherence interferometry and OKULIX ray tracing software in high myopic cataract patients. Patients and methods This retrospective study
Karim M Nabil
doaj   +2 more sources

Agreement and relationship between ultrasonic and partial coherence interferometry measurements of axial length and anterior chamber depth

open access: greenClinical Ophthalmology, 2012
Amany R Wissa, Sherein S Wahba, Maged M RoshdyAin Shams University and National Eye Hospital, Cairo, EgyptPurpose: To find the relationship between axial length (AL) and anterior chamber depth (ACD) measurements, using partial coherence interferometry ...
Wissa AR, Wahba SS, Roshdy MM
doaj   +1 more source

Home - About - Disclaimer - Privacy