Precision of ocular response analyzer

Current Eye Research
Susanne Christiane GoebelsAchim Langenbucher

Abstract

To evaluate the repeatability of corneal hysteresis (CH) and corneal resistance measurements as well as the consistency of the four shots within each measurement using the ocular response analyzer (ORA, Reichert Ophthalmic Instruments, Depew, NY) and to generate a pool of data of a normal population. A total of 45 eyes from 45 healthy volunteers without ocular pathologies and normal visual acuity were enrolled in this study. A sequence of five consecutive measurements was performed with each patient with the ORA. The biomechanical properties of the cornea in terms of CH and corneal resistance factor (CRF) were recorded, as well as the Goldmann-correlated IOP (IOPg) and cornea correlated IOP (IOPcc). The trend in each measurement sequence was analyzed and Cronbach's α was derived for the repeatability. The average of four shots within each measurement was compared with the best signal value (BSV) provided by the internal data processing of the ORA. Mean value for CH was 11.58 and BSV was 11.55. For CRF, mean value was 11.21 and BSV was 11.28. No significant difference was found between the average value and the BSV of one measurement (p > 0.05). No significant difference was found between the average value and the BSV of the fiv...Continue Reading

References

Jul 1, 1993·Survey of Ophthalmology·M M Whitacre, R Stein
Mar 11, 2008·Investigative Ophthalmology & Visual Science·Javier Moreno-MontañésMaría Seguí-Gómez
May 6, 2008·Klinische Monatsblätter für Augenheilkunde·M KynigopoulosI Haefliger
Mar 24, 2009·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·E SpörlL E Pillunat
Nov 13, 2009·Investigative Ophthalmology & Visual Science·David P PiñeroRamón Jiménez
Feb 9, 2010·Ophthalmology·Bruno M FontesWalton Nosé
Oct 15, 2010·Arquivos brasileiros de oftalmologia·Bruno Machado FontesWalton Nosé

❮ Previous
Next ❯

Citations

Aug 31, 2013·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·S GoebelsA Langenbucher
Oct 17, 2015·Current Eye Research·Veysi ÖnerAsker Bulut
Mar 4, 2015·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Susanne GoebelsAchim Langenbucher
Jan 31, 2015·American Journal of Ophthalmology·Susanne GoebelsAchim Langenbucher
Apr 28, 2016·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Karin R PillunatLutz E Pillunat
Jun 19, 2013·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Vinoo Philip DavidStephen A Vernon
Jan 10, 2017·PloS One·Martin ZimmermannJoanna Wasielica-Poslednik
Oct 12, 2018·Journal of Ophthalmology·Heba A El GendyShireen Ma Shousha

❮ Previous
Next ❯

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.