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EasyTon Disposable Tonometer Prisms for all types of Goldmann tonometers, including Perkins Tonometer, avoids cross-contamination and tedious cleaning - provide everything you need for completely sterile tonometry, in one pack - available in boxes of 100
• The prism fits easily on all types of Goldmann tonometers
• No need to clean the tonometer prism - simply throw it away
• Sterilised with ethylene oxide, the tonometer prism is safe to use with no risk of allergic reaction
place the axis of slit lamp between +20°/-20°