Rouhiainen H, Teräsvirta M
Department of Ophthalmology, University Central Hospital, Kuopio, Finland.
Acta Ophthalmol (Copenh). 1990 Jun;68(3):344-6. doi: 10.1111/j.1755-3768.1990.tb01936.x.
New equipment for measuring intraocular pressure have been introduced lately. One of these is the Keeler Pulsair non-contact tonometer which uses pressurized air in measurement. It is found to be safe and easy to use in practice, but it seems to give 1.5-2.0 mmHg lower reading than the Goldmann applanation tonometer. This was confirmed by the present study, where non-contact tonometry was controlled by applanation tonometry with a 2-3 week delay between the measurements. However, for screening procedures the accuracy of the apparatus can be considered as sufficient.
