June 5th
Born June 5, 1862; died July 21, 1930 at the age of 68.
Swedish ophthalmologist, recipient of the Nobel Prize in physiology or medicine in 1911 for his research on the eye as a device for refraction of light. Hermann von Helmholtz had previously shown that the eye solves the accommodation problem by changing the surface curvature of the lens – the closer the object, the more convex the lens becomes; the farther away the object, the more concave the lens. The remaining third was produced by what Gullstrand called the “intracapsular mechanism” and depended on whether the eye was not a homogeneous medium.
