Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/8553

TitleCorrelations between corneal biomechanical properties measured with the ocular response analyzer and icare rebound tonometry
Author(s)Jorge, Jorge
González-Méijome, José Manuel
Queirós, A.
Fernandes, Paulo Rodrigues
Parafita, Manuel A.
KeywordsCorneal biomechanics
Ocular response analyzer
Corneal thickness
Rebound tonometry
Intraocular pressure
Issue dateSep-2008
PublisherLippincott, Williams & Wilkins
JournalJournal of Glaucoma
Citation"Journal of Glaucoma." ISSN 1057-0829. 17:6 (Sept. 2008) 442-446.
Abstract(s)Purpose: To investigate the biomechanical properties of the normal cornea, and correlate them with central and peripheral corneal thickness and age. Methods: Seventy-six right eyes of volunteers were measured with Ocular Response Analyzer (ORA), ICare rebound tonometry and an ultrasound pachymeter at corneal center and at 4 mm from corneal center in the nasal and temporal directions. Results: ICare readings were significantly correlated with central and peripheral corneal thickness and corneal biomechanical properties. Corneal resistance factor was the biomechanical parameter with the higher correlation with ICare IOP values. ICare tonometry at center and Goldmann equivalent IOP obtained with ORA were significantly higher for thicker than thinner corneas (p<0.05). IOP compensated for corneal properties with the ORA was lower than the remaining IOP values measured in the study. Higher correlation was found between Goldmann equivalent IOP with ORA and ICare IOP values. Conclusions: Intra-ocular pressure values obtained with the rebound tonometer are higher in thicker corneas and are positively correlated with biomechanical corneal parameters, namely corneal resistance factor. Although corneal thickness plays a significant role in rebound tonometry, elastic and viscous properties of the cornea seem to play a significant role in the interaction of the tonometer probe with the ocular surface. However, the mechanism behind this process is presently unknown.
TypeArticle
URIhttps://hdl.handle.net/1822/8553
DOI10.1097/IJG.0b013e31815f52b8
ISSN1057-0829
1536-481X
Publisher versionhttp://www.ncbi.nlm.nih.gov/pubmed/18794677
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CDF - OCV - Artigos/Papers (with refereeing)

Files in This Item:
File Description SizeFormat 
INCLUDE ERRATUM_JORGE_08_JGLACOMA (ORA & ICare).pdfPublished Paper569,12 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID