Clinical Comparison Of Intraocular Pressure Measurements Using Goldmann And Proview Tonometry.

The Proview tonometer (Bausch & Lomb, Rochester, NY), the new pressure
phosphene tonometer, would allow glaucoma patients to monitor intraocular
pressure (lOP) by themselves and at various times of the day. The diumal
variation in one's lOP that is known to exist can play an important role in the
management of glaucoma. Unfortunately, there has never been an efficient way
to self-monitor lOP. However, the Proview tonometer, if proven an accurate
means of IOP measurement, would provide doctors insight into the patients
diurnal variations and allow for the most appropriate medical management of the
disease.
A total of 50 non-glaucoma patients (100 eyes) were measured over a 4-week
period. Each subject was thoroughly instructed on the use of the Proview
Tonometer by an examiner. The subject was then allowed to "practice" seeing
the pressure phosphene by using their finger in place of the Proview Tonometer.
After each subject acknowledged to a complete understanding of the procedure,
they were to perform Proview tonometry on themselves, with one reading being
taken on each eye. The same examiner who gave the instructions recorded the
lOP measurements. Goldmann tonometry was then performed one time on each
eye of every subject. This was done by a different examiner and the results
recorded. There was no communication between the different examiners
regarding the results of each method.