very smooth to avoid penetrating DM; used to inject air through the inter corneal tunnel created by the Sarnicola DALK Spatula to for the Big Bubble; designed so the air insufflates from top to bottom in a very deep plane and increases the percentage of Big Bubble formation; used to inject viscoelastic in the space between the stroma and the DM after Big Bubble formation and to create an Air-Visco Bubble if sucessful Big Bubble was not achieved
