Surgical visual feedback and eye fixation method and apparatus
AssigneeQ-Vis Limited
InventorSimon Charles Martin
Life of this patent
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Abstract
A fixation apparatus is provided that limits rotation of the ocular globe of an eye, to facilitate alignment of an instrument with the axis of astigmatism of the eye. The apparatus includes fixation target means (12) for locating in the field of view of the eye so that the eye may fixate on the target. The fixation target means includes or consists of at least one elongate component (16). Also disclosed is a corresponding method, and method and apparatus for supplying visual feedback to an operator during refractive surgery of an eye of a patient.
Claims22
In refractive laser surgery apparatus, a fixation apparatus for limiting rotation of an ocular globe of an eye of a patient during refractive laser surgery on the eye, to facilitate alignment of the surgery apparatus with an axis of astigmatism of the eye, comprising:
- fixation target means disposed at a patient observable position in a field of view of said eye so that said eye may fixate on said target;
- wherein said target means comprises light emitting means that when activated defines at least two intersecting, substantially mutually perpendicular elongate components, each having a location and orientation that remains fixed during said surgery on the eye, thereby limiting rotation of the ocular globe of the patient's eye during said surgery.
In refractive laser surgery on an eye of a patient, a method for limiting rotation of an ocular globe of said eye during said surgery, to facilitate alignment of surgery apparatus with an axis of astigmatism of the eye, comprising providing fixation target means at a patient observable position in the field of view of said eye so that said eye may fixate on said target, wherein said fixation target means comprises activated light emitting means that defines at least two intersecting substantially mutually perpendicular elongate components each having a location and orientation that remains fixed during said surgery on the eye, thereby limiting rotation of the ocular globe of the patient's eye during said surgery.
Dependencies are inferred from the claim text.