| 摘要 |
<p>PROBLEM TO BE SOLVED: To shorten time for measurement, to decrease amt. of exposure to light irradiated on the eyeground of an eye to be examined and to reduce burden of a person to be examined by changing conditions of measurement for artery and vein. SOLUTION: After an examiner selects a site for measurement, whether the site for measurement is artery or vein is inputted by an inputting means of a personal computor 54. Information inputted in the personal computor 54 is transmitted to a system control circuit 56 and time for taking data in during measurement is set to be e.g. 2sec for artery and 0.5sec for vein. When a command for starting tracking is inputted into the system control circuit 56 from an inputting means 55, in a circuit 50 for detecting the position of a blood vessel, based on a light receiving signal of a one dimensional CCD, amt. of deviation from a one dimensional standard position of the image of a blood vessel is calculated.. A galvanometric mirror 22 is driven by means of a tracking servo control circuit 51 and a galvanometric control circuit 52 based on this amt. of movement to control image receiving position of an image of blood vessel on the one dimensional CCD so as to make it const.</p> |
