Customized laser epithelial ablation systems and methods
AssigneeAMO Development, LLC
InventorsKeith Holliday, Mark E. Arnoldussen
Life of this patent
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Abstract
Systems and methods to treat a region of a cornea of an eye having an epithelial layer disposed over a stromal layer. The system comprises a device to map a thickness of the epithelial layer over the region of the cornea to generate a map of epithelial thickness over the region, and a laser to generate a laser beam of an ablative radiation. A movable scan component is coupled to the laser to scan the laser beam over the region. A processor system is coupled to the laser and the movable scan component, and the processor system is configured to arrange pulses of laser beam to ablate the epithelial layer of the region in response to the map of epithelial thickness.
Claims10
A method for treating a region of a cornea of an eye, the region comprising an epithelial layer disposed over a stromal layer, the method comprising:
- mapping a thickness of the epithelial layer in the region of the cornea to obtain a map profile of the epithelial layer;
- obtaining a wavefront map profile from measurements of refractive optical properties of the eye;
- calculating an optical path length for the map profile of the epithelial layer;
- deriving a remainder portion by subtracting the optical path length from the wavefront map profile;
- deriving a stromal ablation profile from the wavefront map profile, the stromal ablation profile including a remainder portion profile that corrects a wavefront error of the remainder portion;
- ablating the epithelial layer of the region of the cornea to expose the stromal layer according to the map profile of the epithelial layer;
- and
- ablating the stromal layer of the region of the cornea according to the stromal ablation profile.
Dependencies are inferred from the claim text.