Corneal topography-based target warping
AssigneeVISX, Incorporated
InventorDimitri Chernyak
Life of this patent
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Abstract
Systems and methods for treating a tissue of an eye with a laser beam include at least one processor that determines angles between a curved surface and a laser beam, controlling an ablative treatment in response to the angles. Angles between a surface of a cornea and a laser beam may be mapped over a treatment area. A mapped area may include an apex of a cornea displaced from a center of a pupil of an eye. Ablation properties may be determined locally in response to the incident angle of a laser beam with respect to a local slope of a tissue surface. The treatment area may be ablated using local ablation properties to form a desired surface shape.
Claims25
A method of treating a cornea of a patient's eye with a laser beam, the method comprising:
- mapping angles between a surface of the cornea and the laser beam over a treatment area;
- determining ablation properties locally across the treatment area in response to the mapped angles so as to formulate a treatment plan using the local ablation properties;
- and
- ablating the treatment area according to the treatment plan to form a desired shape in the surface.
A system for treating a cornea of a patient's eye with a laser beam, the system comprising:
- a laser emitting a beam of an ablative light energy;
- and
- at least one processor having a computer program mapping angles between a surface of the cornea and the laser beam and determining local ablation properties of the cornea in response to the angles, the at least one processor having a computer program controlling an ablative treatment in response to the local ablation properties, the treatment forming a desired shape in the surface.
A system for treating a cornea of an eye with a laser beam, the system comprising:
- a laser emitting a beam of an ablative light energy;
- and
- at least one processor having a computer program determining local angles between a curved surface and the laser beam, the at least one processor having a computer program controlling an ablative treatment in response to the local angles, the treatment forming a desired shape in the surface.
Dependencies are inferred from the claim text.