Quantitative OCT-based corneal topography in keratoconus with intracorneal ring segments.

Biomedical Optics Express
Sergio OrtizSusana Marcos

Abstract

Custom high-resolution high-speed anterior segment spectral domain Optical Coherence Tomography (OCT) was used to characterize three-dimensionally (3-D) corneal topography in keratoconus before and after implantation of intracorneal ring segments (ICRS). Previously described acquisition protocols were followed to minimize the impact of the motions of the eye. The collected set of images was corrected from distortions: fan (scanning) and optical (refraction). Custom algorithms were developed for automatic detection and classification of volumes in the anterior segment of the eye, in particular for the detection and classification of the implanted ICRS. Surfaces were automatically detected for quantitative analysis of the corneal elevation maps (fitted by biconicoids and Zernike polynomials) and pachymetry. Automatic tools were developed for the estimation of the 3-D positioning of the ICRS. The pupil center reference was estimated from the segmented iris volume. The developed algorithms are illustrated in a keratoconic eye (grade III) pre- and 30 days post-operatively after implantation of two triangular-section, 0.3-mm thick Ferrara ring segments. Quantitative corneal topographies reveal that the ICRS produced a flattening of t...Continue Reading

References

Oct 1, 1992·Archives of Ophthalmology·N MamalisR J Olson
Aug 15, 1989·American Journal of Ophthalmology·L J Maguire, W M Bourne
Jan 1, 1993·Journal of Cataract and Refractive Surgery·T E BurrisT A Silvestrini
Jan 1, 1997·International Ophthalmology Clinics·L T Nordan
Mar 11, 1998·Survey of Ophthalmology·Y S Rabinowitz
Jul 1, 1999·Current Opinion in Ophthalmology·T E Burris
Jul 13, 2000·Ophthalmology·A TomidokoroK Miyata
Sep 29, 2000·Journal of Cataract and Refractive Surgery·J ColinF Malet
Sep 17, 2002·Journal of Cataract and Refractive Surgery·Jorge AlióAmr Osman
Nov 30, 2002·Journal of Cataract and Refractive Surgery·Dimitrios SiganosGeorgios Papastergiou
Apr 30, 2003·American Journal of Ophthalmology·Gregor WollensakTheo Seiler
Oct 18, 2005·Cornea·Mohammad Ali JavadiShahin Yazdani
Nov 4, 2006·Journal of Cataract and Refractive Surgery·Michael M LaiDavid Huang
Jan 30, 2008·American Journal of Ophthalmology·Steven M KymesUNKNOWN Collaborative Longitudinal Evaluation of Keratoconus Study Group
May 13, 2008·Journal of Cataract and Refractive Surgery·Hema ShankarKonrad Pesudovs
Mar 19, 2009·Optics Express·Ireneusz GrulkowskiMaciej Wojtkowski
Apr 24, 2009·Investigative Ophthalmology & Visual Science·Alfonso Pérez-EscuderoSusana Marcos
May 13, 2009·Journal of Refractive Surgery·Günhal KamburogluOsman Saraçbasi
May 26, 2009·Journal of Cataract and Refractive Surgery·Scott A ReadBrett A Davis
Jul 14, 2009·Applied Optics·Sergio OrtizSusana Marcos
Sep 29, 2009·Journal of Cataract and Refractive Surgery·Caroline DauweJoseph Colin
Dec 17, 2009·Applied Optics·Sergio OrtizSusana Marcos
May 12, 2010·Journal of Cataract and Refractive Surgery·Yan LiDavid Huang
May 28, 2010·Investigative Ophthalmology & Visual Science·David P PiñeroAntonio Uceda-Montañés
Mar 15, 1988·Applied Optics·J W WarnickiJ C Stuart
Jul 3, 2010·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Alfonso Pérez-EscuderoSusana Marcos
Oct 13, 2011·Biomedical Optics Express·Karol KarnowskiMaciej Wojtkowski
Dec 14, 2011·Biomedical Optics Express·Sergio OrtizSusana Marcos

❮ Previous
Next ❯

Citations

Aug 29, 2013·Japanese Journal of Ophthalmology·Makoto SaikaKohji Nishida
Aug 21, 2013·Ophthalmology·Susana MarcosIgnacio Jiménez-Alfaro
Oct 20, 2012·Biomedical Optics Express·Sergio OrtizSusana Marcos
Sep 21, 2013·Biomedical Optics Express·Enrique GambraSusana Marcos
Aug 16, 2015·Journal of the Mechanical Behavior of Biomedical Materials·M A LagoC Peris-Martínez
Mar 7, 2015·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Lucía Ibares-FríasMaría Carmen Martínez-García
Nov 2, 2014·Biomedical Optics Express·Mengchan SunSusana Marcos
Mar 19, 2013·Biomedical Optics Express·Sergio OrtizSusana Marcos
May 28, 2016·Biomedical Optics Express·M SunS Marcos
Jun 5, 2018·Cornea·Mohammad-Reza SedaghatJavad Sadeghi Allahabadi
Nov 6, 2018·European Journal of Ophthalmology·Cristina Peris-MartínezAndrés Gené-Sampedro
Mar 9, 2017·Biomedical Optics Express·Joerg WagnerPhilippe C Cattin

❮ Previous
Next ❯

Methods Mentioned

BETA
imaging techniques

Software Mentioned

sOCT

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.