US 11,653,831 B2
Visual performance examination device, visual performance examination method, and computer program
Shuji Hakoshima, Yokohama (JP)
Assigned to JVCKENWOOD Corporation, Yokohama (JP)
Filed by JVC KENWOOD Corporation, Yokohama (JP)
Filed on Apr. 28, 2021, as Appl. No. 17/242,384.
Application 17/242,384 is a continuation of application No. 16/409,968, filed on May 13, 2019, granted, now 11,019,994.
Application 16/409,968 is a continuation of application No. PCT/JP2017/039791, filed on Nov. 2, 2017.
Claims priority of application No. JP2016-256645 (JP), filed on Dec. 28, 2016; and application No. JP2016-256646 (JP), filed on Dec. 28, 2016.
Prior Publication US 2021/0244270 A1, Aug. 12, 2021
Int. Cl. A61B 3/11 (2006.01); A61B 3/00 (2006.01); A61B 3/032 (2006.01); A61B 3/08 (2006.01); A61B 3/14 (2006.01); A61B 3/10 (2006.01); A61B 3/113 (2006.01)
CPC A61B 3/111 (2013.01) [A61B 3/0008 (2013.01); A61B 3/032 (2013.01); A61B 3/085 (2013.01); A61B 3/10 (2013.01); A61B 3/113 (2013.01); A61B 3/14 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A visual performance examination device, comprising:
a display control unit that displays an indicator at each of a plurality of positions on a display screen of a display device;
an image data obtaining unit that obtains image data of eyes of a test subject, which are irradiated with a detection light emitted from a light source;
a position calculating unit that, based on the image data, calculates a position data of corneal reflexes of the eyes when each of a plurality of indicators displayed at the positions in the display screen is shown; and
an evaluating unit that, based on relative positions of the indicators and relative positions of the corneal reflexes, outputs evaluation data about visual performance of the test subject, wherein the evaluating unit outputs the evaluation data based on a degree of similarity between a first figure that is defined according to the relative positions of the indicators and a second figure that is defined according to the relative positions of the corneal reflexes.