Examining the fabric of the eye: Antoni van Leeuwenhoek, the draper and ocular microscopist.

We review Antoni van Leeuwenhoek's (1632 - 1723) microscopic studies of comparative ocular anatomy in humans, mammals, birds, and fish. His contributions in anatomical microscopy to ocular biology has been overshadowed by his prolific work and first observations of protists and bacteria, spermatozoa, red blood cells, and dental plaque. Leeuwenhoek's Delftian optical and artisanal heritage more than compensated for any lack of formal scientific training and, in keeping with his Royal Society ethos, shone light onto the "fabric of the eye" in order to better understand its function, which he had extended with his microscopes.