Document Detail

Dynamic contour tonometry: a comparative study on human cadaver eyes.
MedLine Citation:
PMID:  15364707     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare intraocular pressure measurements obtained by recently introduced dynamic contour tonometry (DCT), Goldmann applanation tonometry (GAT), pneumatonometry (PTG), and intracameral manometry in human cadaver eyes. METHODS: Sixteen freshly enucleated human cadaver eyes were deepithelialized and dehydrated with dextran. A tube was placed in the anterior chamber and connected to a transducer and to a bottle system filled with balanced salt solution. The pressure in the eye was then altered between 5 mm Hg and 58 mm Hg. Intraocular pressure measurements were obtained with DCT, GAT, and PTG at each manometric pressure reading. RESULTS: On average, DCT values measured 0.58 +/- 0.70 mm Hg higher than real intracameral pressure. The GAT and PGT showed consistently lower values, -4.01 +/- 1.76 mm Hg and -5.09 +/- 2.61 mm Hg, respectively. At all bottle heights, DCT values were significantly closer to the reference pressure than GAT and PTG (P<.001). CONCLUSIONS: Measurement with DCT provides IOP values significantly closer to true manometric levels than either GAT or PTG. Further studies are warranted to determine its reliability in patients and the effect of corneal thickness.
Christoph Kniestedt; Michelle Nee; Robert L Stamper
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of ophthalmology     Volume:  122     ISSN:  0003-9950     ISO Abbreviation:  Arch. Ophthalmol.     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2004-09-14     Completed Date:  2004-09-28     Revised Date:  2006-12-04    
Medline Journal Info:
Nlm Unique ID:  7706534     Medline TA:  Arch Ophthalmol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1287-93     Citation Subset:  AIM; IM    
Department of Ophthalmology, University of California-San Francisco, 10 Kirkham Street, San Francisco, CA 94143, USA.
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MeSH Terms
Aged, 80 and over
Intraocular Pressure / physiology*
Middle Aged
Reproducibility of Results
Tonometry, Ocular / methods*
Comment In:
Arch Ophthalmol. 2006 Nov;124(11):1664; author reply 1664   [PMID:  17102024 ]

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