| 摘要 |
<p>PURPOSE:To detect a code judging region of the max. amt. of Doppler shift and to measure a correct blood flow condition regardless of the position and the direction of a blood vessel in eyegrounds. CONSTITUTION:A laser light from a laser light source 65 for measurement is projected to an eye E to be examined and a reflected light from an eyeground Ea is reflected by a pair of small mirrors 32a and 32b being back of a perforated mirror 30 and is received by a photomultiplier 34a and is taken in a system controlling part 67 and the amt. of Doppler shift from an opening part of an aperture 62 with 2 holes is at first measured by the action of a light path switching mirror 64. Then, the light path switching mirror 64 is inserted into a light path of a signal light and a measurement by a signal light from another aperture is performed. A code inversion region is detected from these measured values by the system controlling part 67.</p> |
