Sources of variability in the results of applanation tonometry.

摘要: Sources of variability in measurements intraocular pressure (IOP) by applanation tonometry were examined with a repeated 3 X Latin square design that allowed independent extraction variation attributable to nine patients, three observers and the order which performed measurements. The observers, who experienced, did not differ significantly general level IOP readings they obtained or readings. effect was significant; there an approximately linear decrease successive measurements, though difference between first second largest. intrinsic gave approximate 90% tolerance intervals +/- 4.5 mm Hg for single reading average two mean decrement readings, 1.0 Hg, implies need consistent protocol sessions tonometry.