Patent ID: 9226853
Filing Date: 2016-01-05
CPC Classification: A61B,A61F,B23K

Claim Text:
1. A method of photoaltering a sub-surface area of a patient's cornea using a pulsed laser beam, the sub-surface area having a first region and a second region which is a central region surrounded by the first region, the method comprising the steps of: transmitting the pulsed laser beam with a scanner to the first region of the sub-surface area of the cornea in accordance with only a first laser scan pattern based on a continuous scan of the pulsed laser beam, the first laser scan pattern continuing until an acceleration associated with scanning the first laser scan pattern reaches a pre-determined maximum limit; and after the first laser scan pattern reaches the pre-determined maximum limit of the acceleration associated therewith, transmitting the pulsed laser beam with a scanner to the second region of the sub-surface area of the cornea in accordance with only a second laser scan pattern based on a continuous scan of the pulsed laser beam that is different than the first laser scan pattern, the second laser scan pattern having an associated acceleration that is less than the pre-determined maximum limit, and wherein the first region and the second region combine to span the entire sub-surface area of the cornea.