Under Pressure: The Reusability of the iCare Rebound Tonometer's Disposable Probes

Background: This research study aims to evaluate the effect that disinfection of
tonometer probes has on intraocular pressure measurements using the ICare tonometer.
Methods: Intraocular pressure was measured six times in forty eyes using the ICare
tonometer and a new tonometer probe. The probe from each eye was then disinfected
using Hydrogen Peroxide, then re-tested six times on the same eye that it had measured
previously, and the results were compared to find any difference. Results: The average reading from the unused probes was 15.14 with a standard deviation of 3.84, whereas the disinfected probes had an average reading of 14.76 with a standard deviation of 3.76
Conclusion: There was no statistical or clinically significant difference found in the
intraocular pressure measurements taken with the ICare Tonometer using new versus
disinfected probes.