| 摘要 |
PURPOSE: To perform operations easily such as alignment of a device, tracking of a measured site, and measurement start or the like by means of a single operating stick. CONSTITUTION: An operator performs alignment of a tested eye and a measuring head 68 by means of an operating stick 73 and an operating ring 74. An indicator due to tracking light as well as the eyeground image are displayed on a liquid crystal monitor 40 after the alignment coincides with each other. At first, the operator performs focusing of the eyeground image by means of a focus knob 76, secondly makes the indicator coincide with an angle and position of a measuring site and selects the site by operating the rotary dial 75 or the like. Then the rotary dial 75 is moved toward a different direction from the rotary axis, the first step of a driving switch in the operating stick 73 is inputted to start tracking, and furthermore measurement of blood flow velosity is started by inputting the second step of the driving switch when tracking is operated normally. |
