Operator-Controlled Scanning Laser Procedure Designed for Large-Area Epithelium Removal

A system to ablate an eye to remove an epithelial layer of the eye, the system comprising:

• a laser to generate a beam of an ablative radiation;
• a movable structure disposed along the laser beam path to adjust a size of the laser beam to at least one smaller size and at least one larger size;
• a movable scan component configured to scan the adjustably sized laser beam over a region of the eye to ablate the epithelial layer;
• and
• a processor system comprising a tangible medium and a memory, the processor system coupled to the laser, the movable structure and the movable scan component, the processor system configured to scan the ablative radiation to vary a location of the beam in accordance with a pulse sequence, wherein the pulse sequence is arranged in response to a plurality of ring shaped basis profiles.