Schiotz tonometry accurately measures intraocular pressure in Boston type 1 keratoprosthesis eyes

Cornea
Igor E EstrovichSteven L Mansberger

Abstract

To evaluate the location of the eye and tonometry device that provides the most accurate intraocular pressure (IOP) measurements in eyes with Boston type 1 keratoprosthesis. A single surgeon sutured a Boston keratoprosthesis into the central cornea in the usual manner in 5 eyes of deceased donors. Another investigator used a 27-gauge needle, digital manometry, and gravity infusion to set the IOP at levels of 10, 20, 30, and 40 mm Hg in random order. A second investigator masked to the level of IOP used a Schiotz tonometer (Sklar) with a 7.5-g plunger load and a Tono-pen XL tonometer (Medtronic) to determine IOP at the temporal corneoscleral limbus and temporal sclera (3 mm temporal to the corneoscleral limbus). We used generalized estimation equation models to determine an average absolute difference between the tonometer measurements compared with the "gold standard" digital manometric IOP. The Schiotz tonometer had a lower median absolute error compared with the Tono-pen at both temporal sclera (5.4 mm Hg vs. 39.0 mm Hg, P < 0.001) and corneoscleral limbus (4.9 vs. 15.0 mm Hg, P = 0.03). The median absolute error for Schiotz was similar at the temporal sclera and corneoscleral limbus (P = 0.44). The Schiotz tonometer has the ...Continue Reading

References

May 1, 1995·American Journal of Ophthalmology·J BaumE B Dreyer
Jun 1, 1997·The British Journal of Ophthalmology·M M Wright, A L Grajewski
Apr 17, 1998·Ophthalmology·P A NetlandC H Dohlman
Aug 15, 2003·Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus·Talia KolinYosi Braun
Jun 21, 2005·The British Journal of Ophthalmology·P-A TonnuD Garway-Heath
May 1, 2007·Ophthalmology·James V AquavellaGregory J McCormick
Jun 5, 2007·American Journal of Ophthalmology·Esen Karamursel AkpekClaes H Dohlman
Jun 15, 2007·Archives of Ophthalmology·Bilal F KhanClaes H Dohlman
Jan 22, 2008·American Journal of Ophthalmology·Rony R SayeghClaes H Dohlman
Feb 14, 2008·Ophthalmology·Deborah Pavan-Langston, Claes H Dohlman
Mar 19, 2008·Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie·Mona Harissi-Dagher, Claes H Dohlman
Jun 4, 2011·American Journal of Ophthalmology·Jennifer Y LiMark J Mannis
Jul 28, 2011·Investigative Ophthalmology & Visual Science·J Crawford DownsVerney Sallee
Oct 11, 2011·American Journal of Ophthalmology·Julia C TalajicMona Harissi-Dagher
Dec 3, 2011·Cornea·Roheena KamyarShahzad I Mian
Feb 22, 2014·Investigative Ophthalmology & Visual Science·Charles C LinYing Han

❮ Previous
Next ❯

Citations

Apr 7, 2017·Current Opinion in Ophthalmology·Hajirah N SaeedJames Chodosh
Oct 27, 2018·Journal of Veterinary Research·Karolina WrześniewskaDagmara Winiarczyk
Sep 16, 2020·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Chukwuemeka Junior ObinwanneStella Dike
May 20, 2020·Clinical Ophthalmology·Manachai NonpassoponMaria Soledad Cortina
Aug 5, 2017·Cornea·Otavio A Magalhaes, Anthony J Aldave

❮ 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.

Related Papers

American Journal of Optometry and Archives of American Academy of Optometry
P F SHULMAN
Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie
David GoldblumJohn Danias
© 2021 Meta ULC. All rights reserved