Comparison of the Keeler Pulsair 2000 non-contact tonometer with Goldmann applanation.
The Pulsair 2000 non-contact tonometer (Keeler Ltd, UK) is compared with the Goldmann applanation tonometer. Data from 80 eyes were acquired by four experienced observers. A linear regression analysis showed the relationship between the instruments to be: Pulsair = 0.66 + 0.95 Goldmann. Individual components of variation were analysed by analysis of variance which indicated a significant variation in the slope of the regression equation due to observers (p = 0.02) but not to the order in which topical anaesthesia was administered. Differences between two Pulsair instruments were of marginal significance (p = 0.07). The intercept of the regression equation was unaffected by any of the components of variation. Seventy-nine per cent of averaged intraocular pressure measurements obtained with the Pulsair 2000 fell on or within +/- 3 mmHg of those measured with the Goldmann tonometer. It is concluded that the Pulsair 2000 can provide clinically useful measurements of intraocular pressure.
Moseley
M J
MJ
Department of Ophthalmology, University of Birmingham, UK.
Thompson
J R
JR
Deutsch
J
J
Misson
G P
GP
Naylor
G
G
Tan-Yee
A
A
Taylor
R H
RH
Fielder
A R
AR
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005902:Glaucoma, Open-Angle / Q000175:diagnosis; D006801:Humans; D008875:Middle Aged; D009798:Ocular Hypertension / Q000175:diagnosis; D014065:Tonometry, Ocular / Q000295:instrumentation*