A self-contained ocular surgery instrument, including a power module having a body presenting a mating coupler and including a compressed gas supply; a fluid reservoir; an aspiration pump; an aspirated material reservoir and a control panel. The mating coupler is structured to receive and couple to at least one module that facilitates performance of an eye surgery task. The compressed gas supply is coupled to the aspiration pump and the aspirated material reservoir is in fluid communication with the aspiration pump to receive aspirated material from the mating coupler. The fluid reservoir is in fluid communication with the mating coupler such that fluid is supplied under pressure to the mating coupler and thus to the at least one module that facilitates performance of an eye surgery task. The control panel is in controlling communication with the compressed gas supply, the aspiration pump and the aspirated material reservoir.