Document Detail

Clinical evaluation of the Keeler Pulsair 3000 non-contact tonometer.
MedLine Citation:
PMID:  12365714     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The Keeler Pulsair 3000 is a recently introduced non-contact tonometer that is especially useful for children and those for whom sitting at a slit-lamp or table-mounted unit would be difficult. In this project, intraocular pressures (IOPs) measured by Keeler Pulsair 3000 and Goldmann tonometers were compared to assess validity and reliability of the Pulsair 3000 data. METHODS: Two Pulsair 3000 IOPs (each the mean of four individual air-puff readings) and two Goldmann IOPs were measured for each eye of 113 subjects. Subjects were also asked which measurement technique they preferred. RESULTS: IOPs ranged from 9 to 28 mmHg. Correlations between the two Goldmann IOPs measured for the right and left eyes were 0.98 and 0.97, respectively. These values are higher than correlations between Pulsair and Goldmann measurements (0.86 to 0.91). Pulsair 3000 IOPs were slightly above Goldmann values for pressures of less than 15 mmHg and slightly below for IOPs greater than 15 mmHg. Extrapolation to a Goldmann IOP of 30 mmHg suggests the Pulsair 3000 would read about 6% (1.7 mmHg) too low at this IOP. Eight eyes (7%) had differences between Pulsair 3000 and Goldmann IOP readings of 5.0 mmHg or more. Single outlier pressures accounted for these differences in three out of the eight eyes. CONCLUSIONS: In the range of 10 to 24 mmHg, the Pulsair 3000 tonometer produced IOP readings that corresponded well with Goldmann values for most eyes and was preferred by the majority of subjects who indicated a preference. The Pulsair 3000 is relatively easy to use by technicians and has numerous special applications in optometric practice (e.g. measuring IOPs for pediatric patients and those with compromised corneas).
Wendy Lawson-Kopp; Amy DeJong; Lorne Yudcovitch; Salisa Williams; Paul Kohl; Robert L Yolton
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Publication Detail:
Type:  Clinical Trial; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Optometry (St. Louis, Mo.)     Volume:  73     ISSN:  1529-1839     ISO Abbreviation:  Optometry     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-10-07     Completed Date:  2002-10-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100912421     Medline TA:  Optometry     Country:  United States    
Other Details:
Languages:  eng     Pagination:  81-90     Citation Subset:  IM    
Pacific University, College of Optometry, Forest Grove, Oregon 97116, USA.
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MeSH Terms
Equipment Design
Intraocular Pressure
Tonometry, Ocular / instrumentation*,  standards*

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

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