The drape assembly is for creating a barrier between a sterile field and anoptical devicehaving an objective lens. The drape assembly comprises a drape body comprisinga flexiblematerial sized to cover at least a portion of the optical device a lenshousing attached to thedrape body and configured to engage with the optical device to attach theretoproximate tothe objective lens a lens cover holder removably attached to the lens housingto rotate abouta first axis and a lens cover mounted to the lens cover holder to pivot abouta second axisdifferent from the first axis.