LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY
MODEL RELEASED. Measuring eye pressure. Tonometer being used to measure the pressure inside a patient's eyeball (intraocular pressure). Conditions such as glaucoma cause raised pressure in the eyeball, which can lead to blindness if not detected and treated. This is the Tono-Pen tonometer from Medtronic. Photographed at the Princess Alexandra Eye Pavilion, Edinburgh, Scotland.
Model release available. Property release not required.