Obituary of Professor Satoshi Ishikawa (1932-2022)

My great teacher, honorary Professor Satoshi Ishikawa passed away on the 18th of May 2022, at the age of 89 years.

In Memoriam Obituary of Professor Satoshi Ishikawa (1932–2022) FIG. 2. At Zojoji, Tokyo, INOS 2006. Front row: Profs. William Hoyt, Tom Hedges, Satoshi Ishikawa (Kitasto, Kanagawa), Satoshi Kashii (Kyoto); second row: Profs. Kazutaka Kani (Shiga), Akio Tabuchi (Kawasaki, Kurashiki), Masato Wakakura, Inouye, Tokyo, host of INOS 2006; third row: Profs. Kazuo Mukuno (Kitasato, Kanagawa), Osamu Mimura (Hyogo), Kenji Kitahara (Jikei, Tokyo), and Motohiro Kiyosawa (Tokyo). FIG. 1. Satoshi Ishikawa. M y great teacher, honorary Professor Satoshi Ishikawa (Fig. 1) passed away on the 18th of May 2022, at the age of 89 years. He was a pioneer and a real leader in neuroophthalmology and environmental medicine in Japan. He graduated from Medical School, Tohoku University (Sendai) in 1957 and joined the Department of Ophthalmology, Tokyo University. He studied neuro-ophthalmology at the Department of Ophthalmology, the New York University Medical Center (under Professor Goodwin M. Breinin [1918–2011]). In 1971, he was appointed to a first chairman and Chief Professor, Department of Ophthalmology, Kitasato University, School of Medicine. He published the Japanese first textbook of Neuro-ophthalmology and then established Japanese Neuro-Ophthalmology Society (JNOS) in 1980. He hosted the sixth International NeuroOphthalmology Society (INOS) Congress at Hakone, Kanagawa, and the Pupil Colloquium in Hamamatsu, Shizuoka, in 1986. He was present at the 16th INOS meeting in 2006, in Zojoji, Tokyo (Fig. 2). e602 Among his many achievements, were quantitative analyses of pupillary response using videopupillography.1 The videopupillography was used not only in the neuroophthalmology field but also in autonomic nerve function testing. He had a really warm and charming character and had a good sense of humor. He was loved by everyone around him. He nurtured many Japanese and Asian neuroophthalmologists and made many lifelong friendships with American and European neuro-ophthalmologists. FIG. 3. 1986 INOS meeting Hakone, Japan, where Satoshi Ishikawa and Richard Sogg along with Professor Ishikawa’s wife, Sonoko, and daughter, Junko, formed a quartet and played for the guests. Wakakura: J Neuro-Ophthalmol 2022; 42: e602-e603 Copyright © North American Neuro-Ophthalmology Society. Unauthorized reproduction of this article is prohibited. In Memoriam He was also a professional cellist. I often enjoyed his playing cello along with piano by his wife, Sonoko, and violin by his daughter, Junko, at his home concerts. Many neuro-ophthalmologists who attended INOS meeting at Hakone may have a memory of Satoshi, Sonoko, Junko, and Dr. Richard Sogg playing a piano quartet (Fig. 3). After retiring as dean of the medical school, chairmanship of the department in 1999, and president of JNOS in 2003, he developed a strong interest in environmental medicine including chemical hypersensitivity, visual terminal display syndrome, sick building syndrome, and chronic toxicity of pesticides. He received the Jonathan Forman Prize from the American Academy of Environmental Medicine (AAEM) in 1996 (see https://www.aaemonline. org/awards/). Wakakura: J Neuro-Ophthalmol 2022; 42: e602-e603 I trust that his work in neuro-ophthalmology and as an education researcher was passed onto his son (Prof. Hitoshi Ishikawa, the fourth president of JNOS). On behalf of all the students of Professor Satoshi Ishikawa and neuro-ophthalmologists around the world who were his friends, we would like to express deepest gratitude and sincere sorrow in Professor Satoshi Ishikawa’s passing. Masato Wakakura, MD, PhD Inouye Eye Hospital, Tokyo, Japan E-mail: [e-mail] REFERENCE 1. Ishikawa S, Naito M, Inaba K. A new videopupillography. Ophthalmologica. 1970;160:248–259. e603 Copyright © North American Neuro-Ophthalmology Society. Unauthorized reproduction of this article is prohibited.