At age 5, he started private lessons with Leon Pfeifer [sl], a former student of Otakar Ševčík, at the Academy of Music, Ljubljana.

He spent three months at the Royal College of Music learning the Elgar Violin Concerto in B minor under one of its greatest exponents, Albert Sammons,[1] followed by two years study with Max Rostal.

[1] In 1951 Ozim won the International Carl Flesch Violin Competition, making his Wigmore Hall debut recital shortly afterwards.

[1][2] His students included Božena Angelova, Rachel Kolly d'Alba, Lea Birringer, Kurt Sassmannshaus, Peter Tanfield, Olivier Thouin, Patricia Kopatchinskaja, Richard Tognetti and Gwendolyn Masin, as well as current and past leaders of the Berlin Philharmonic, Bavarian Radio Symphony, Zürich Tonhalle Orchestra, Dresden Staatskapelle, Orchestra of the Royal Opera House and many others.

He also recorded violin concertos by his countrymen Slavko Osterc, Lucijan Marija Škerjanc, Ivo Petrić, Janez Matičič and Uroš Krek.