O-VSG6576.GLOBE FIXATION RING.MATERIAL MEDICAL GRADE BIOCOMPATIBLE PLASTIC.CRESCENT SHAPE OUTER EDGE AND SEMI CIRCULAR INNER RING.INNER RING HAS BLUNT POINTS THAT AID IN ACCURATE HOLDING OF GLOBE OF EYES DURING REFRACTIVE PROCEDURES.ALSO TERMED AS SWIVEL/THORNTON/SCLERAL FIXATION RING.