Fig. 3

Feasibility experiments on porcine eyes a: Unproblematic insertion of a 3 mm 23G-polyimide cannula. The angulation of the trocar to place the trocar tip in the remaining oil bubble was easily achievable. b: Placement of the extraction sleeve over a 23G-trocar. In comparison to the shortest cannula, a fourfold increase of the volume aspirated in 5 ml was observed. Angulation of the trocar is not possible. Surgeons must be careful to not lose contact to the trocar during removal. c: The luer-trocar system allowed easy angulation of the trocar tip within the eye. The luer-trocar system had similar removal speeds as the extraction sleeve but offered preferable stability and surgical control