Accuracy of the Tonosafe disposable tonometer head compared to the Goldmann tonometer alone.

Purpose: To assess the accuracy of the Tonosafe disposable prism tonometer head via a randomised controlled prospective trial.

Methods: The intraocular pressure (IOP) of 69 patients (31 men, 38 women) involving 137 eyes was measured using both the Tonosafe disposable and the Goldmann tono-meter head. The average age of patients was 66.