为盲人重新获得视觉既是科学工作者面临的任务,也是人们普遍关注的问题。估计1975年,全世界盲人达1800万人。直到不久以前,盲人的行动主要靠探路棍,盲人的教育和职业条件主要依靠简单的触觉,这些只能给盲人极有限的帮助。现代科学技术的发展,新兴的电子科学和计算机技术的广泛应用,生物医学工程学、仿生学等各学科领城的相应进展,促进 Retrieving vision for the blind is both a task for scientists and a matter of general concern. It is estimated that in 1975, the world’s blind population reached 18 million. It was not long ago that blind people operated mainly by means of exploration sticks. The education and professional conditions of the blind mainly depended on simple touch, which only gave the blind people a very limited help. The development of modern science and technology, the emerging application of electronic science and computer technology, the corresponding progress in various disciplines such as biomedical engineering and bionics, and the promotion of