With CIRCLE option the intrastromal interface of a previously performed SMILE® can be extended in diameter and complemented with a flap side cut. The purpose of the Circle procedure is to enable a LASIK procedure should subsequent kerato-refractive treatment be required. Please be aware that Procedure Packs are sterile products. The expiry date of the Procedure Packs is usually minimum 12 months from the shipment date. Includes: A CIRCLE Procedure Pack includes one contact glass and one treatment license.