Sklar's Merit Vannas micro scissors are double spring thumb scissors most commonly used in ophthalmic procedures such as iridectomy and capsulotomy, but also used in some vascular procedures or to cut 10-0 and 9-0 sutures. The 6mm, delicate blades are available straight, curved, or angled. The Vannas are available several material grades - from premium OR grade to disposable floor grade.. Merit is Sklar's cost effective office grade of instruments, handcrafted in Pakistan, and are used for routine outpatient procedures.