a self - lubricating ocular prosthesis includes a solid rigid prosthetic eye body with a chamber in the body opening through an access passage through the posterior surface of the body closed with a releasable cap having an outside face conforming to the posterior surface of the body which abuts the orbital cavity . the cap is of a semi - rigid or flexible polymeric resin to retain a fluid in the chamber which is dispensed through bore openings from the chamber through the surface of the eye body . liquid may be inserted directly into the cavity through the bore opening while the prosthesis is in place . the prosthesis may also include a dispensing ball or depressible button to dispense fluid from the prosthesis .