This vitrectomy lens system comprises of a set of contact lenses (with concave contact surface) and a ring to hold the contact lenses in position. The main advantage of this system is that it minimizes the dependence of a well-trained assistant. The set comprises of the following lenses: - MILR Silicon ring - MILR1 Stainless steel ring with two notches - MILR2 Stainless steel ring with two struts - MIL1 Machemer flat lens - MIL2 Tolenteno prism lens 20 - MIL3 Tolenteno prism lens 30 - MIL4 Machemer magnifying lens - MIL5 Paymen wide field lens - MIL6 Landers biconcave-90 D lens - MIL7 Woldoff prismatic biconcave lens