One of the most important artists to have come from or worked in this region. His importance lies not only in his works themselves, but also in his other activities. He has been an ambassador, initiator and mediator of unofficial tendencies and events, as well as working tirelessly as a university art teacher in Ostrava. He studied at the Bratislava University of Fine Arts (1957–1963) under Peter Matejka. He became an important figure on the art scene while still a student, and after discussions with the organizers of the “Confrontations” exhibitions in Prague, he organized Confrontations in Bratislava too. He later become a founding (and active) member of the Concretist Club. His work is characterized by a constant striving to find new concepts and materials, experimenting with forms and new horizons. After beginning his career working with informel structures, letters and symbols became a formative element in his art. He became one of the first (and foremost) Czech lettrists and visual poets. He has also deviated from his focused letters to explore figural painting in an idiom close to that of the Czech Grotesque school. Ovčáček is particularly known for his large visual collages, in which he burned brass letters into paper, arranging them in rows, accumulating and overlayering them or creating words, sentences and quotations. He has also left an indelible imprint on Czech serigraphy, becoming a pioneer of serigraphic techniques and expanding their potential by applying geometric and constructivist principles. In recent years he has also left his artistic mark on computer graphics. The seminal importance of his work has been recognized by numerous awards and prizes.