This diploma thesis focuses on the definition of cyborgization and to delimit it. The cyborgizatoon of body is one of the ways of human improvement next to gene manipulation and neuromanipulation. It is difficult to express the specific definition because the experts have a different point of view, what for thesis shows various point of view -- both technooptimistic and technopesimistic -- and it tries to find the most suitable definition. People do not want to admit the cyborgization is not only vision of distant future but all of us are the cyborgs practically. What for the thesis deals with various cyborgization methods using in practice or developing to apply them in practice in a short time. The major focus is put to eyesight, the thesis gives a detailed description of refractive surgery, it develops very fast nowadays. The thesis also deals with controversial topic -- digital chips beneath skin -- and then it tries to find an answer to cyborgization is able to separate the society.