François Chopart was born in Paris on 30 October 1743. A French surgeon and pioneer of urological surgery, his name remains associated with the midtarsal joint and amputation.
Dickinson Woodruff Richards Jr. was born on 30 October 1895 in Orange, New Jersey. An American physician and physiologist, he shared the 1956 Nobel Prize in Physiology or Medicine for work on cardiac catheterisation and the circulation.
Lester Tallmon Jones died in Portland on 30 October 1983. The American ophthalmologist described the lacrimal pump, formalised the Jones fluorescein tests, and designed the Jones tube for lacrimal surgery.