Document Detail


Rebound tonometer compared with goldmann tonometer in normal and pathologic corneas.
MedLine Citation:
PMID:  17457191     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To compare the intraocular pressure (IOP) measurements obtained with the rebound tonometer (RT) and the Goldmann handheld tonometer (GT) in normal and altered corneas. METHODS: A total of 208 normal corneas and 50 corneas with pathologies were included in this prospective study. All measurements were randomly obtained by 1 observer. The medians and interquartile range (IR) for both tonometers were compared. The median differences were assessed in IOP groups. Agreement between the tonometers was calculated using the Bland-Altman method. RESULTS: The median IOP in all eyes was 17 mm Hg (IR, 13-22 mm Hg) with the RT and 16 mm Hg (IR, 13-21 mm Hg) with the GT (P < 0.001). The correlation was excellent between tonometers (r2 = 0.86; P < 0.001). The minimal differences between the two were obtained from 10 to 20 mm Hg (GT). The Bland-Altman scatterplot obtained good agreement between the instruments. In normal corneas, the median difference was < or =2 mm Hg in 77.4% of cases. In the altered corneas, the median difference was < or =2 mm Hg in 73% of cases (P = 0.21 compared with the normal group). In 10% and 2% of cases, the IOP could not be measured using the GT and RT, respectively. CONCLUSIONS: The results were similar for both tonometers. In the altered corneas, the IOP could be difficult to obtain with the GT because of distorted half-circles. The 1-mm-diameter disposable RT tip facilitated obtaining measurements without anesthetic drops, which avoids infections. The RT could be useful in routine clinical settings when measuring IOP in corneas with pathologies.
Authors:
Javier Moreno-Montañés; Noelia García; Ana Fernández-Hortelano; Alfredo García-Layana
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Cornea     Volume:  26     ISSN:  0277-3740     ISO Abbreviation:  Cornea     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-25     Completed Date:  2007-06-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8216186     Medline TA:  Cornea     Country:  United States    
Other Details:
Languages:  eng     Pagination:  427-30     Citation Subset:  IM    
Affiliation:
Department of Ophthalmology, Clínica Universitaria, Universidad de Navarra, Pamplona, Spain. jmoreno@unav.es
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MeSH Terms
Descriptor/Qualifier:
Aged
Corneal Diseases / physiopathology*
Cross-Sectional Studies
Humans
Intraocular Pressure / physiology*
Middle Aged
Prospective Studies
Tonometry, Ocular / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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