Tonometry2012

Non-contact device that flattens the cornea using a jet of air. An optic receiver detects when
and how fast the cornea has been flattened to a predetermined degree. The unit then converts
the amount of time it takes for applanation to occur into millimeters of mercury. This method’s
advantage lies in the fact that a local anesthetic is not required and potential contamination
from a tonometry cylinder is prevented. However, the measurement is not as accurate as
Goldmann’s tonometry, particularly with high IOP levels.
Patient movement a problem!!
Air Air-puff Air Air-puff puff tonometry