passages: 620
passages: document
passages: Clinical performance of the Reichert AT550 : a new non-contact tonometer . The aim of the present study was to assess the level of accuracy for measurements of intra-ocular pressure ( IOP ) obtained with a new non-contact tonometer ( NCT ) the Reichert AT550 . Measurements were compared against those obtained with the Reichert Xpert Plus , Goldmann applanation tonometer and Perkins tonometer . Thirty-five university students were assessed with the four tonometers in a randomised order , with non-contact tonometry performed first . Each of the four measurement devices had its own trained clinical observer . Plots of differences of IOP as a function of the mean for each pair of instruments were obtained . No statistically significant differences were found when comparing the AT550 NCT with contact applanation tonometry ( AT ) ( p > 0.05 ) , displaying the closest level of agreement ( as represented by the lowest mean difference and the narrowest confidence interval ) with the Goldmann tonometer ( limits of agreement , 0.12+/-2.17 ) . In conclusion , readings of IOP with the AT550 NCT are clinically comparable with those obtained with Goldmann tonometry in a population with IOP within the normal range .
entities: 621
entities: Intervention_Other
entities: Reichert AT550 :
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entities: Intervention_Other
entities: Reichert AT550 .
entities: 623
entities: Intervention_Other
entities: Reichert Xpert Plus
entities: 624
entities: Intervention_Other
entities: Goldmann applanation tonometer
entities: 625
entities: Intervention_Other
entities: Perkins tonometer .
entities: 626
entities: Intervention_Other
entities: AT550 NCT
entities: 627
entities: Intervention_Other
entities: Goldmann tonometer
entities: 628
entities: Intervention_Other
entities: AT550 NCT
entities: 629
entities: Intervention_Other
entities: Goldmann tonometry
entities: 630
entities: Outcome_Other
entities: Clinical performance
entities: 631
entities: Outcome_Other
entities: level of accuracy
entities: 632
entities: Outcome_Other
entities: measurements
entities: 633
entities: Outcome_Physical
entities: IOP
entities: 634
entities: Participant_Sample-size
entities: Thirty-five
entities: 635
entities: Participant_Condition
entities: university students were assessed