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US 12,336,938 B2Granted
Ablation systems and methods for treating presbyopia
AssigneeAlcon Inc.
InventorsZsolt Bor, Mario Klafke, Johannes Krause, Keith Watanabe
Life of this patent
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Abstract
According to certain embodiments, an ophthalmic surgical system for treating presbyopia comprises controllable components and a computer. The controllable components comprise a light source that generates a light beam and a scanner that directs a focal point of the light beam. The computer determines an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes. The ablation profile is designed to remove tissue from the central region to yield a protrusion to provide for near-vision, and to remove tissue from the peripheral region to correct to emmetropia.
Claims18
An ophthalmic surgical system for treating presbyopia, comprising:
- a plurality of controllable components comprising:
- a light source configured to generate a light beam;
- and
- a scanner configured to direct a focal point of the light beam;
- a computer configured to:
- determine an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes, the ablation profile designed to remove tissue from the central region to yield a protrusion to provide for near-vision, the protrusion of the central region of the cornea having a diameter of 0.5 to 4 millimeters and a height of 3 to 50 micrometers, the ablation profile designed to remove tissue from the peripheral region to correct to emmetropia;
- instruct one or more of the controllable components to ablate the cornea of the first eye according to the ablation profile;
- determine a second ablation profile designed to correct a second eye of the pair of eyes to emmetropia;
- and
- instruct one or more of the controllable components to ablate a second central region and a second peripheral region of the cornea of the second eye according to the second ablation profile to correct the second eye to emmetropia.
7 more elements
A method for treating presbyopia, comprising:
- generating, by a light source of a plurality of controllable components, a light beam;
- directing, by a scanner of the plurality of controllable components, a focal point of the light beam;
- determining, by a computer, an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes, the ablation profile designed to remove tissue from the central region to yield a protrusion to provide for near-vision, the protrusion of the central region of the cornea having a diameter of 0.5 to 4 millimeters and a height of 3 to 50 micrometers, the ablation profile designed to remove tissue from the peripheral region to correct to emmetropia;
- instructing, by the computer, one or more of the controllable components to ablate the cornea of the first eye according to the ablation profile;
- determining, by the computer, a second ablation profile designed to correct a second eye of the pair of eyes to emmetropia;
- and
- instructing, by the computer, one or more of the controllable components to ablate a second central region and a second peripheral region of the cornea of the second eye according to the second ablation profile to correct the second eye to emmetropia.
4 more elements
An ophthalmic surgical system for treating presbyopia, comprising:
- a plurality of controllable components comprising:
- a light source configured to generate a light beam;
- and
- a scanner configured to direct a focal point of the light beam;
- a computer configured to:
- determine an ablation profile to remove tissue from a central region and a peripheral region of a cornea of a first eye of a pair of eyes, the first eye of the pair of eyes is non-dominant, a second eye of the pair of eyes is dominant, the ablation profile designed to remove tissue from the central region to yield a protrusion to provide for near-vision, the protrusion of the central region of the cornea being spherical with a diameter of 0.5 to 4 millimeters and with a height of 30 to 50 micrometers, the ablation profile designed to remove tissue from the peripheral region to correct to emmetropia, the computer determining the ablation profile by:
- determining the ablation profile is designed to treat myopia, the ablation profile removing a thicker portion of the cornea at an inner portion of the peripheral region than at an outer portion of the peripheral region;
- or
- determining the ablation profile is designed to treat hyperopia, the ablation profile removing a thicker portion of the cornea at an outer portion of the peripheral region than at an inner portion of the peripheral region;
- generate a focal spot pattern corresponding to the ablation profile, a point of the focal spot pattern designated to be aligned with a visual axis of the eye;
- determine the visual axis of the eye;
- align the point of the focal spot pattern relative to the visual axis to ablate the cornea;
- instruct one or more of the controllable components to ablate the cornea of the first eye according to the ablation profile;
- determine a second ablation profile designed to correct the second eye to emmetropia;
- and
- instruct one or more of the controllable components to ablate a second central region and a second peripheral region of the cornea of the second eye according to the second ablation profile to correct the second eye to emmetropia.
13 more elements
Dependencies are inferred from the claim text.