Evaluation of a Tangential Map-Based Nomogram for Intrastromal Corneal Ring Segments' Implantation in Keratoconus: One Year Results

Journal of Ophthalmology
Adel Galal ZakyMoataz Faiz Elsawy

Abstract

To evaluate a new tangential map-based nomogram versus the axial map-based nomogram for ICRS in keratoconus. A prospective case series study including 64 eyes of 64 patients who underwent ICRS implantation. Cone location was determined for each eye with two maps: the axial and the tangential. Appropriate ring selection was determined using two surgical nomograms: axial map-based and tangential map-based. Visual, refractive, and topographic outcomes were assessed before, as well as at 3, 6, and 12 months after ICRS implantation. The cone location, and consequently the ring selection, was significantly different in the two nomograms with a "centralization tendency" in the tangential map. In the axial group, UDVA and CDVA improved from 0.12 ± 0.04 and 0.24 ± 0.08 to 0.28 ± 0.08 and 0.4 ± 0.1, respectively. Similarly, MRSE substantially decreased from -6.7 ± 3.3 to -1.2 ± 1.1D at 12 months after the procedure. In the tangential group, UDVA and CDVA improved from 0.09 ± 0.06 and 0.2 ± 0.1 to 0.5 ± 0.2 and 0.7 ± 0.2, respectively. MRSE substantially decreased from -4.9 ± 1D at 12 months after the procedure. In the tangential group, UDVA and CDVA improved from 0.09 ± 0.06 and 0.2 ± 0.1 to 0.5 ± 0.2 and 0.7 ± 0.2, respectively. MRSE su...Continue Reading

References

Dec 1, 1996·American Journal of Ophthalmology·Y S Rabinowitz
Mar 11, 1998·Survey of Ophthalmology·Y S Rabinowitz
Mar 22, 2003·Journal of Cataract and Refractive Surgery·Joseph Colin, Sylvie Velou
Nov 15, 2005·Eye & Contact Lens·Loretta Szczotka-Flynn, Binoy R Jani
Dec 23, 2006·American Journal of Ophthalmology·George D KymionisIoannis G Pallikaris
Jun 26, 2007·Journal of Cataract and Refractive Surgery·Aylin Ertan, Joseph Colin
Feb 23, 2008·American Journal of Ophthalmology·Efekan CoskunsevenIoannis G Pallikaris
Sep 29, 2009·Journal of Cataract and Refractive Surgery·Leonardo TorquettiPaulo Ferrara
Jun 30, 2010·The British Journal of Ophthalmology·Tamer M El-Raggal
Jan 10, 2013·Investigative Ophthalmology & Visual Science·Sabine Kling, Susana Marcos
Jun 12, 2013·Journal of Cataract and Refractive Surgery·Alfredo Vega-EstradaNeus Burguera
Feb 5, 2014·Indian Journal of Ophthalmology·Rohit ShettyRudy M M A Nuijts
Mar 29, 2014·Middle East African Journal of Ophthalmology·Jorge L AlioJoaquim Murta
Jul 24, 2014·The Cochrane Database of Systematic Reviews·Miriam KeaneKeryn Williams
Jul 5, 2015·Journal of Optometry·Michel MillodotShmuel Behrman
Dec 26, 2015·Journal of Cataract and Refractive Surgery·Shyam Sunder TummanapalliVirender S Sangwan
Jan 20, 2016·Eye and Vision·Francisco Arnalich-MontielJorge L Alió
Feb 24, 2016·Eye and Vision·F Cavas-MartínezD G Fernández-Pacheco
Mar 17, 2016·Eye and Vision·Alfredo Vega-Estrada, Jorge L Alio
Apr 12, 2016·Journal of Cataract and Refractive Surgery·Marina IsraelNizar S Abdelfattah
Oct 18, 2016·Cornea·Luis Fernández-Vega CuetoJose F Alfonso
Mar 10, 2018·Journal of Refractive Surgery·Zisis GatzioufasMiltos Balidis
Apr 4, 2018·Journal of Cataract and Refractive Surgery·Mohamed Omar Yousif, Azza Mohamed Ahmed Said
Dec 14, 2018·European Journal of Ophthalmology·Guilherme Andrade do Nascimento RochaLuciene Barbosa de Sousa
Mar 9, 2019·European Journal of Ophthalmology·Luis Fernández-Vega-CuetoDavid Madrid-Costa
Apr 26, 2019·Frontiers in Bioengineering and Biotechnology·Brecken J BlackburnWilliam J Dupps

❮ Previous
Next ❯

Software Mentioned

Power Analysis Sample Size
SPSS
MyoRing

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.

Related Papers

Proceedings of the Annual Meeting of the American Psychopathological Association
J RUESCH
Clinics in Plastic Surgery
W W Monafo
Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG
Tim Brambring, Rainer Rompel
The British Journal of Radiology
A Rodger
© 2021 Meta ULC. All rights reserved