The invention relates to a correlated set for minimal invasive surgery comprising a surgical instrument and a pattern generating member, a surgical system, a training kit, a method of training and a method of performing a minimal invasive surgery. The surgical instrument comprises a handle portion, a surgical tool and a body portion connecting the handle portion to the surgical tool. The pattern generating member comprises a pattern light source and a projector for projecting a light pattern. The projector is adapted for being at least temporarily fixed to the body portion of the surgical instrument such that a movement of said surgical tool results in a correlated movement of said projector.