The first cataracts operation in Serbia was performed by Lazarević and in 1884 he was the first doctor to be sent as an envoy to Austria to learn about animal lymphatic systems.

[3] In addition to his native Serbian, Lazarević was fluent in Russian, French and German.

[5] His early writings were influenced by the socialist ideals of Svetozar Marković before shifting to a more conservative position.

[6] He was a member of several Serbian Learned Societies, including SANU and his works were translated into numerous languages.

He is included in The 100 most prominent Serbs and he was elected a member of Parnassos Literary Society.