A device to be inserted within a lens capsule during ocular surgery to
contain fluids, including therapeutic and optical materials, used for
irrigation within the capsule is provided. The device includes a
deformable membrane within a ring. The ring may include flanges that
increase sealing area between the ring and the posterior surface of an
anterior capsule. One or more ports are provided for irrigation within
the capsule. Reduced pressure in an area around the periphery of the
membrane may be used for forming a sealing area between the device and
the posterior surface of the capsule. Method for inserting the device
into the capsule and performing irrigation or aspiration for polishing
and for deforming the lens capsule is provided. The device may be placed
in an eye for permanent isolation of fluids-within the lens capsule from
tissue and fluids outside the capsule.