Hisao Ishigaki

Title: Hisao Ishigaki - Innovator in Vision Testing Technology

Introduction

Hisao Ishigaki is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of vision testing technology. His innovative approach has led to the development of a unique vision tester that enhances the accuracy of visual acuity assessments.

Latest Patents

His most recent patent is a vision tester that comprises a slide projector for projecting a visual indication chart onto a curved display screen via a mirror rotated by a motor. The center of curvature of the curved display screen substantially coincides with the subject's eye. The rotation of the mirror causes an image of the visual indicator to be moved across the screen in a specific direction. When the subject provides a response to the moving image, the speed of image movement at the time of the response is detected and stored in a memory. The average of a plurality of such measurements is used to determine the subject's dynamic visual acuity. This invention has the potential to improve the efficiency and effectiveness of vision testing.

Career Highlights

Hisao Ishigaki is associated with Kowa Company Limited, where he has been instrumental in advancing vision testing technologies. His work has garnered attention for its innovative approach and practical applications in the field of optometry.

Collaborations

He has collaborated with notable colleagues such as Yoshikatsu Suzumura and Tetsu Tanigawa. Their combined expertise has contributed to the development of cutting-edge technologies in vision testing.

Conclusion

Hisao Ishigaki's contributions to vision testing technology exemplify the impact of innovation in healthcare. His patented vision tester represents a significant advancement in the field, showcasing his dedication to improving visual assessment methods.