SY6D010 Hoffer Optic Zone Marker Φ7 1. Precise positioning: The marking ring can accurately locate the area to be operated on during eye surgery, helping the surgeon to perform the operation more precisely. 2. Visualisation: The ring is usually brightly coloured with distinctive marking lines, allowing the surgeon to clearly see the position of the eyeball and the surgical area, thus improving the visibility of the surgery. 3. Safety and Reliability: The marking ring is made of medical grade material with good biocompatibility and durability, which can ensure the safety and reliability of the surgical procedure.