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About Us

From the Past into the Future

Working towards our goal.


Our development of visual prostheses commenced in 2001. Each of the devices comprising a system needs to be repeatedly tested, analyzed and verified to accumulate element technology for the move to final system development. Devices to be implanted into the human body, in particular, must be studied in the collaboration with medical professionals and tests of various kinds is conducted carefully and repeatedly to ensure safety.

In 2005 and 2008, the safety and efficacy of the stimulation method employed for STS Artificial Retina System was evaluated together with our R&D partner, the Osaka University Medical School. We conducted an acute clinical trial involving the delivering of stimulation in over a short period in the operating room.

The semichronic clinical trial of about a month was conducted in 2010, with trial use of the STS approach Artificial Retina System prototype. In one of the tests conducted to assess visual perception when using the system, a white bar was positioned in front of the patients' eyes and the examiner asked questions about the position, size and direction of movement. Data obtained through this function evaluation and the result of study after implant surgery demonstrated the safety and efficacy of the STS Artificial Retina System at the prototype level.

Today and into the Future

Based on the results we have obtained so far, our development has moved onto improving the system to raise the level of functionality. Our next step is to conduct long‒term clinical study in order to take another big step toward completion of the system.

Research and Development Partners

Visual prosthesis development kicked off in 2001 as national medical and engineering collaboration project. Today, the project is moving forward in close partnership with research institutes such as Osaka University Medical School and the Nara Institute of Science and Technology.

・Department of Ophthalmology, Osaka University
新しいウィンドウで開きます・Department of Applied Visual Science, Graduate School of Medicine, Osaka University
新しいウィンドウで開きます・Photonic Device Science Lab., Graduate School of Materials Science, Nara Institute of Science and Technology