For Deep Anterior Lamellar Keratoplasty, the D.A.L.K. spatula dissection set consists of three styles : Red Spatula : Short, triangled spatula used to dissect downward into the cornea, until the desired stromal depth is reached.White Spatula : Half-length, curved spatula with a rounded tip used to make the dissection up to two thirds across the cornea.Blue Spatula : Full-length, curved spatula used to complete the dissection across the cornea over 360 degrees.