Patent ID: 6834202
Filing Date: 2004-12-21
Classification: A61B

Abstract:
An ophthalmic apparatus comprising:illumination means for illuminating an eye fundus area including a specified target area; image taking means for taking the image of the eye fundus area and thereby outputting an image signal; signal processing means for processing and normalizing the image signal, based on a condition determined in accordance with the outputted image signal from said image taking means; position determination means for determining the position of the target area based on an output of said signal processing means; and auto tracking means for executing automatic tracking of the position of the target area based on an output of said position determining means, wherein the signal of the target area indicates a vessel image, and said signal processing means is adapted to extract a signal of a portion of the vessel image and to execute a normalization process for varying the gain based on the signal of the portion of the vessel image.