Fig. 2

Feasibility of proposed needle system in different conditions; a developed prototype with a 10 KRW coin for size reference (10KRW coin has a diameter of 22.86 mm). The inset view shows the puncturing tip on the 25G stylet, b movement of needle inside the eyeball of skull phantom to reach different targets from the same insertion point, c the proposed needle system inside a phantom eyeball, and d movement of the needle inside a block that is filled with albumen (white part of the egg)