Method for collagen treatment
OwnerBruce J. Sandinventor
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Abstract
A method for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser. A specific application to ophthalmological corneal reshaping is described.
Claims21
A method for shrinking collagen tissue comprising the step of irradiating the tissue with energy having a wavelength in the range of about 1.80 to 2.55 microns.
The method defined in claim wherein the energy wavelength is in the range of about 2.0 to 2.2 microns.
A keratoplasty method for shape modification of a cornea comprising the step of irradiating the cornea with energy having a wavelength in the range of about 1.80 to 2.55 microns to shrink collagen tissue in the cornea.
A keratoplasty method for shape modification of a cornea, comprising the step of irradiating the cornea with coherent laser energy of infrared wavelength corresponding to corneal-collagen absorption coefficients in the range of about 15 to 120 cm.sup.-1, and thereby to heat and shrink the corneal collagen.
Dependencies are inferred from the claim text.