Image Based Question – 74787

Which ophthalmological investigation is being done here?

A. Tonometry

B. Pachymetry

C. Laser interferometry

D. B-mode ultrasound

Correct Answer » A Explanation

Answer- A. Tonometry

• The process shown in the image is applanation tonometry, using Goldmann’s tonomete.. The applanation tonometer is used to measure intraocular pressure. It relies on the principle that for an ideal, dry, thin-walled sphere, the pressure inside a sphere is proportional to the force applied to its surface.