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July 5th (Sun) 9:00-10:15

Ishihara Symposium:
100th anniversary of the Ishihara pseudo–isochromatic test plates

The Ishihara Pseudo-isochromatic Plates have been used all over the world for clinical colour-vision testing and basic research on colour vision. A special session to commemorate the 100th anniversary of publication of the first edition (1914) is planned.

Prof. Ishihara and Ishihara test for colour blindness

Mitsuru Sawa, MD, PhD

Public Interest Incorporated Foundation Isshinkai, Japan.
Sawa Eye Clinic, Japan

Prof. Sawa graduated University of Tokyo School of Medicine in 1973 and served as a Fellow and an Assistant at Department of Ophthalmology, University of Tokyo School of Medicine afterward. He received his Ph.D. from University of Tokyo in 1980. After serving as an Instructor at Jichi Medical School, a Research Fellow at Massachusetts Eye and Ear Infirmary (Boston), Harvard Medical School, an Associate Professor at University of Tokyo, a Director of Corneal Transplantation Section/ University Hospital, University of Tokyo, a Chairman and a Professor at Department of Ophthalmology, Nihon University School of Medicine, a Director of University Hospital, Nihon University School of Medicine, he become an Emeritus Professor at Nihon University in 2015.

Abstract: Professor Shinobu Ishihara was born in 1879 in Tokyo. He graduated from Tokyo Imperial University School of Medicine in 1905 and studied ophthalmology at the University and on abroad at the University of Jena in 1912 under Prof. Stock. He was charged in Chairman of Professor, Department of Ophthalmology, Tokyo Imperial University School of Medicine in 1923. He played a pivotal role in developing ophthalmology in Japan to teach many distinguished fellows and to make great contribution in research and clinical field. The innovation of test plates for colour blindness is one his master pieces. In 1914 he invented prototype of Ishihara Colour vision Test in Japanese with reference to Stilling's Test, and he published the test in 1930. His test chart had so high sensitivity and specificity that the 14th World Ophthalmology Congress in 1933 recommended the test as a reliable test method as well as Stilling's Test and Nagel's Anomaloscope. After he retired academic position and he was granted the title of emeritus professor from the Tokyo University in 1940, he devoted his life to improve his Test Plates. He was commended the First Order of the Sacred Treasure from the government in 1961. It is my great honor to introduce his life in the memorial symposium.

July 4th (Sat) 18:30-20:00

The "Dress" Session (informal) :
Color science behind percepts of the blue-black / white-gold dress

The blue-black/white-gold "dress" episode was a delightful example of color bi-stability across and within observers, which exposed how little we understand about surface, material and illumination color perception. Any "illusion" that is so powerful probably has multiple causes working together. A number of proposals have been put forward, but nobody has solid evidence that explains the individual differences or the bistability, so this session will highlight aspects of color perception that different researchers think are relevant. There will be 8-10 presentations (5 minutes each) on physical information in the images, perceptual assumptions/priors, color asymmetries, attention, inferential strategies, and neural mechanisms, followed by an extended 40-50 minute discussion with the audience.

Confirmed speakers:
Marina Bloj, Hidehiko Komatsu, Sérgio MC Nascimento, Keiji Uchikawa, Michael Webster, Qasim Zaidi

© ICVS 2015 Organizing Committee, 2014. All Rights Reserved.