The Haag-Streit Tonosafe™ Disposable Tonometer Prism consist of a holder and single-use sterile prism. The Tonosafe™ is designed to avoid the cleaning and disinfecting required with standard applanation tonometer prisms. The result is increased time efficiency and reduced risk of cross-infection. Each box contains 5 Trays of 1 Prism Holder & 20 Single-Patient-Use Prisms. Total of 5 prism holders and 100 prisms per box.