Soon after the development of the laser in 1960, a number of medical applications of the new device were. undertaken. Thus, by 1963 there were important steps taken in photocoagulation of the eye, in cellular studies, in surgery, and in cancer research. It is apparent that the medical profession is quick to incorporate new developments in its forefront research, particularly in difficult problem areas. Although, the introduction of the laser in medical and biological applications were made widely and with great enthusiasm, the results have been rather disappointing in some areas. At present, there still is only one major clinical application of the laser in medicine, i.e., in ocular photocoagulation, however, there are numerous exciting areas that are being currently investigated and unquestionably, the laser is proving to be an exceptional tool in many areas of research.