Apparaat voor oogmetingen en drie ogen met daarin vormen weerspiegeld before 1896

This 1896 photographic plate by Swedish ophthalmologist Allvar Gullstrand (1862–1930) illustrates his innovative techniques for measuring the human eye. The image documents his scientific process, showing a specialized apparatus used to measure refraction of light and its effect on the human eye, alongside images of eyes looking at targets, including a circular target and a target with geometric shapes. Gullstrand's work in ophthalmology was revolutionary and contributed to the advancement of eye care. His research earned him the Nobel Prize in Physiology or Medicine in 1911.