Which technique uses a probe or puff to measure intraocular pressure, and name one limitation?

Which technique uses a probe or puff to measure intraocular pressure, and name one limitation?

• A. Tonometry; non-contact puff tonometry is less accurate and influenced by corneal thickness and hydration
• B. Ophthalmoscopy; it cannot measure pressure
• C. Perimetry; it does not measure pressure
• D. Slit-lamp examination; it directly measures IOP

Answer: (A)