公开(公告)号：EP3417764A1

公开(公告)日：2018-12-26

申请号：EP18176704.7

申请日：2018-06-08

申请人： Chukyo Medical Co., Inc.

发明人： ICHIKAWA, Kazuo ,  SATO, Hiroyuki ,  TANAKA, Yoshiki

IPC分类号： A61B3/06 ,  A61B3/024

摘要： Provided are an apparatus and a method, for testing a visual function of a subject, that make it possible to appropriately test the sensitivity for each color for each region of a visual field. In a state in which the subject is caused to gaze at one point 6 in a background 7, a visual target 5 for testing a color-related visual function of the subject is displayed in a peripheral region of the gaze point 6 such that the luminance of the background 7 has a numerical value included between a numerical value smaller by 10% and a numerical value greater by 10% than the luminance of the visual target 5. Then, for each measurement point 300, a threshold that is a size of the visual target 5 that determines whether or not the subject can perceive the visual target 5 is obtained for a plurality of times.

公开(公告)号：EP3417764B1

公开(公告)日：2019-10-30

申请号：EP18176704.7

申请日：2018-06-08

申请人： Chukyo Medical Co., Inc.

发明人： ICHIKAWA, Kazuo ,  SATO, Hiroyuki ,  TANAKA, Yoshiki

IPC分类号： A61B3/06 ,  A61B3/024

公开(公告)号：EP4137036A1

公开(公告)日：2023-02-22

申请号：EP22189664.0

申请日：2022-08-10

申请人： Chukyo Medical Co., Inc.

发明人： ICHIKAWA, Kazuo ,  YOKOYAMA, Sho ,  TANAKA, Yoshiki

IPC分类号： A61B3/06

摘要： Provided is a visual target display device or a visual target presentation method which can test the cone-specific visual function more accurately in a device that displays a visual target, of a chromatic color, for testing the color-related visual function of a subject or a method of presenting the visual target.
A visual target 8, of a chromatic color, for testing the color-related visual function of a subject and a background 9 around the visual target 8 are presented in such a way that the brightness of the background 9 is a numerical value between a numerical value 10% less than the brightness of the visual target 8 and a numerical value 10% greater than the brightness of the visual target 8 and a combination of the color of the visual target 8 and the color of the background 9 is a combination of colors which are in a relationship of confusion colors in dichromatism. The color of the background 9 is set to a chromatic color, for example. For example, the color of the visual target 8 and the color of the background 9 are set to chromatic colors located on opposite sides of a region of an achromatic color on the same confusion color locus passing through the region of the achromatic color in a chromaticity diagram. The color of the visual target 8 and the color of the background 9 are set to colors of the same chroma, for example.