
author
1818–1889
A pioneering Dutch physician, he helped turn the study of vision into a more exact science and became one of the key figures in modern ophthalmology. His work on how the eye focuses and how visual reaction time can be measured also left a mark beyond medicine.

by F. C. (Franciscus Cornelis) Donders
Born in Tilburg in 1818, Franciscus Cornelis Donders became a Dutch physician, physiologist, and ophthalmologist whose career was closely tied to Utrecht. He taught physiology there and built an international reputation for his research on the eye, eventually directing the Netherlands Hospital for Eye Patients.
Donders is especially remembered for making the correction of refractive errors such as nearsightedness and farsightedness more scientific. His studies of accommodation and refraction helped shape modern eye care, and he is often described as one of the founders of scientific ophthalmology.
His influence reached beyond eye disease alone. Donders also carried out important work in physiology and early experimental psychology, including studies of reaction time that became widely known in the history of mental chronometry. He died in Utrecht in 1889, but his name remains strongly associated with vision science and medical research in the Netherlands.