The Goldmann applanation tonometer can be cleaned with which of the following?

• A. Household bleach (1:10 dilution)
• B. Alcohol
• C. 3% Hydrogen Peroxide
• D. All of the above

Answer: (D)

Cleaning and disinfecting the Goldman applanation tonometer prism between patients is essential to prevent cross-infection and to keep readings accurate. A quick wipe with 70% isopropyl alcohol is commonly used to remove residues between patients. For deeper disinfection, 3% hydrogen peroxide is effective when applied for the recommended contact time and then thoroughly rinsed. Diluted household bleach (1:10) is also used in many clinics for disinfection, with proper contact time and complete rinsing to remove any residue before the next patient. Because each agent can be used safely when following the instrument manufacturer’s guidelines and the clinic’s protocol, all of these options are acceptable when applied correctly.