System and Method for Using Compensating Incisions in Intrastromal Refractive Surgery
First Claim
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1. A system for performing intrastromal laser refractive surgery on the cornea of an eye which comprises:
- a laser unit for generating a pulsed laser beam to provide for Laser Induced Optical Breakdown (LIOB) of tissue, to weaken stromal tissue and cause a redistribution of biomechanical forces in the stroma for correcting a predetermined asymmetrical optical condition of the eye; and
a computer electronically connected to the laser unit for controlling the laser unit, to surgically reshape the cornea by creating at least one singularly unique compensating incision in the stroma, wherein the compensating incision is defined by a pattern to counter and minimize the adverse effect on vision caused by the asymmetrical optical condition.
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Abstract
A system and method for performing intrastromal ophthalmic laser surgery requires Laser Induced Optical Breakdown (LIOB) of stromal tissue without compromising Bowman'"'"'s capsule (membrane). In detail, at least one singularly unique, intrastromal compensating incision is made relative to a defined axis of the eye. The location of this compensating incision is specifically selected to counter and minimize the adverse effect on vision that may be caused by a predetermined (e.g. surgically introduced) asymmetrical optical condition.
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Citations
20 Claims
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1. A system for performing intrastromal laser refractive surgery on the cornea of an eye which comprises:
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a laser unit for generating a pulsed laser beam to provide for Laser Induced Optical Breakdown (LIOB) of tissue, to weaken stromal tissue and cause a redistribution of biomechanical forces in the stroma for correcting a predetermined asymmetrical optical condition of the eye; and a computer electronically connected to the laser unit for controlling the laser unit, to surgically reshape the cornea by creating at least one singularly unique compensating incision in the stroma, wherein the compensating incision is defined by a pattern to counter and minimize the adverse effect on vision caused by the asymmetrical optical condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer program for use with a computer to control a laser unit for performing intrastromal laser refractive surgery on the cornea of an eye, wherein the eye defines an axis and the computer program comprises:
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a program section for configuring a laser beam of the laser unit to cause Laser Induced Optical Breakdown (LIOB) of tissue, and to weaken the tissue for a redistribution of biomechanical forces in the stroma for correction of a predetermined asymmetrical optical condition of the eye; and a program section for moving the focal spot of the laser beam in a pattern of successive focal spots to create at least one singularly unique compensating incision in the stroma, wherein the compensating incision is defined by the pattern and is made relative to the axis to counter and minimize the adverse effect on vision caused by the asymmetrical optical condition. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for performing intrastromal laser refractive surgery on the cornea of an eye, wherein the eye defines an axis and the method comprises the steps of:
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configuring a laser beam of the laser unit to cause Laser Induced Optical Breakdown (LIOB) of tissue, and to weaken the tissue for a redistribution of biomechanical forces in the stroma for correction of a predetermined asymmetrical optical condition of the eye; and moving the focal spot of the laser beam in a pattern of successive focal spots to create at least one singularly unique compensating incision in the stroma, wherein the compensating incision is defined by the pattern and is made relative to the axis to counter and minimize the adverse effect on vision caused by the asymmetrical optical condition. - View Dependent Claims (18, 19, 20)
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Specification