1981  February         

 (korea) Passed the National Examination for Medical Practitioners

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1981  March          

(Korea) Graduated from Kyungpook National University School of Medicine

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1981  November         

Japan Passed the 72nd Korean Medical Examination

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1981  December          

Joined the Department of Ophthalmology, Osaka Medical University 

1983  December         

Completed Ophthalmology Training, Osaka Medical University

1984  January          

Osaka Municipal Children's Health Center Employment Ophthalmology

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1985  September            

Same as above Retirement

1985  October          

Osaka City Kitano Hospital Ophthalmology Employment

1987  September           

Same as above Retirement

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1987  October           

Osaka Saiseikai Ibaraki Hospital Ophthalmology Employment

1988  March           

Same as above Retirement

1988  May            

Ryo Ophthalmology Clinic opened

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1994   June          

  Established medical corporation Iseikai Ryo Ophthalmology Clinic Appointed as chairman and managing doctor   

2020   October           

Therapist Ryo Ophthalmology Clinic Chairman / Management Doctor retired

2020   October           

Worked at the medical corporation Iseikai Ryo Ophthalmology Clinic

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2021    April           

Retirement of medical corporation Iseikai Ryo Ophthalmology Clinic

2021    May            

Sakaisuji Honmachi Saito Eye Clinic Open