Perfect tenses are rarely used in Russian, but rather the perfective aspect of the verb (e.g., "открыть" vs. "открывать"), which is used to convey the meaning of a totally completed action with a specific result.
Perfect tenses are rarely used in Russian, but rather the "perfective form of the verb" (e.g., "открыть" vs. "открывать") which differ from that of "perfect tense" in English. The "perfective form" is used to convey the meaning of a totally completed action with a specific result.