Patent ID: 6830334
Filing Date: 2004-12-14
Classification: A61B

Abstract:
A system for measuring a diameter of a limbus of an eye comprising:an image recorder at a known location apart from the eye for recording an illuminated limbus image; at least a first illumination source at a first known location relative to the image recorder for illuminating the limbus; a computing device connected to the image recorder for determining the diameter of the limbus from the recorded illuminated limbus; a second illumination source at a second known location relative to the image recorder for illuminating the limbus; a switching device connected to the first and second illumination sources for sequentially enabling the first and second illumination sources for allowing the image recorder to record at least one image illuminated by each of the first and second illumination sources; and wherein the computing device combines at least one recorded image illuminated by the first illumination source and at least one recorded image illuminated by the second illumination source for determining the diameter of the limbus.