Description
History of Keratoscopy
Father Christopher Scheiner (1619) was the first documented as comparing corneal images to marbles. Henry Goode (1847) described the first keratoscope. In 1880 Antonio Placido introduced the Placido disc, consisting of a flat disc with a series of concentric black and white rings, the corneal reflections of the rings being examined through a central aperture. Placido was also the first to photograph the corneal image and Gullstrand (1896) quantitatively analysed the photographic keratoscope images. The Klein keratoscope is a more recent adaptation of the Placido disc and contains a 6.00 dioptre lens in the centre of an internally illuminated Placido disc. Klyce (1984) and later Maguire (1987) looked at graphic presentations of photographic keratoscope images. Their use of colour corneal contour maps was a precursor for current videokeratography.
