A Pneumatic Applanation Tonometer—a Clinical Study

Tonometric measurements were taken on two series of patients using two different instruments, viz., the Goldmann applanation tonometer and the Applamatic tonometer. There is a high correlation between the applanation results and the applamatic readings taken on the cornea. Although statistically significant at the 0.001 level, the correlations involving the readings taken with the applamatic tonometer on the selera are not as high as for the corneal measurements. There is also evidence of a short “learning period” when the operator is not familiar with this new instrument.