Patent ID: 7284861
Filing Date: 2007-10-23
Classification: A61B,A61F

Abstract:
1. An ophthalmic apparatus comprising: an illumination unit which illuminates an anterior segment including a pupil of a patient's eye with visible light; a light intensity adjustment unit which adjusts light intensity of the visible light; the light intensity adjustment unit increasing the light intensity of the visible light in a first mode and decreasing the light intensity of the visible light in a second mode: an image-pickup unit which picks up an image of the anterior segment, the image-pickup unit picking up a first image of the anterior segment of the eye in photopia of which the pupil is constricted in the same degree as myosis in refractive surgery with visible light illumination by increasing the light intensity of the visible light in the first mode, and picking up a second image of the anterior segment of the eye in scotopia of which the pupil is dilated in the same degree as natural mydriasis in a dark place by decreasing the light intensity of the visible light in the second mode; a pupil information computation unit which obtains pupil information in each of the first and second images by image processing, the pupil information including at least one of a position and a shape of the pupil, and obtains information about a difference between the pupil information in the first image and the pupil information in the second image; and output means for outputting the obtained information about the difference.