Patent ID: 9215975
Filing Date: 2015-12-22
Classification: A61B

Abstract:
1. An ophthalmic device to measure weakness of Zinn's zonule of an examinee's eye, the device comprising: an illuminating unit arranged to illuminate the examinee's eye including a lens; an imaging unit including an imaging element and arranged to capture an image of an anterior segment illuminated by the illuminating unit; and a determination unit arranged to process the image of the anterior segment captured by the imaging unit after applying a stimulus to guide the lens to move and change a visual direction of the examinee's eye, the determination unit being further configured to obtain positional information of a characteristic point of the lens to detect mobility of the lens relative to the pupil when the lens returns to a pre-stimulus status, and determine the zonular weakness based on the detected mobility of the lens correlated to a moving speed in the up-down and right-left directions with respect the examinee's eye, the examinee's eye caused to change direction by applying the stimulus to introduce movement of the lens.