Optical filter on contact lens surface
AssigneeLutronic Vision Inc.
InventorsDayan Ban, Rongping Dai, Cameron Graeme Cooke, Heechul Lee
Life of this patent
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Abstract
A contact assembly (301,400) for laser surgery may include a contact lens (402) and an optical filter (404). The contact lens (402) may be configured to be positioned in an optical path of therapeutic radiation (310) directed at an eye (100) of a patient. The optical filter (404) may be coupled to an outer surface (402A) of the contact lens (402). The optical filter (404) may be transparent to the therapeutic radiation (310) with a first wavelength and may be opaque to radiation (318) with a second wavelength different than the first wavelength.
Claims16
A contact lens assembly for laser surgery on an eye of a patient,
- the contact lens assembly comprising:
- a contact lens configured to be positioned in an optical path of therapeutic radiation having a first wavelength directed at the eye of the patient;
- and
- an optical filter coupled to a surface of the contact lens, the optical filter being transparent to the therapeutic radiation with the first wavelength and being opaque to radiation with a second wavelength different than the first wavelength,
- wherein the radiation with the second wavelength includes fluorescence radiation and the second wavelength is longer than the first wavelength, and
- wherein the optical filter includes a single layer of polymer with a polymer index of refraction n2 that is different than a lens index of refraction n1 of the contact lens and different than a cornea index of refraction n3 of a cornea of the eye of the patient, and the n2 is equal to (n1*n3)1/2.
A laser-based ophthalmological surgical system comprising:
- a therapeutic radiation source configured to emit therapeutic radiation;
- and
- a contact lens assembly optically coupled to the therapeutic radiation source, wherein the contact lens assembly comprises:
- a contact lens transparent to the therapeutic radiation;
- and
- an optical filter coupled to a surface of the contact lens, the optical filter being transparent to the therapeutic radiation and being opaque to fluorescence radiation,
- wherein a wavelength of the fluorescence radiation is longer than a wavelength of the therapeutic radiation, and
- wherein the optical filter includes a single layer of polymer with a polymer index of refraction n2 that is different than a lens index of refraction n1 of the contact lens and different than a cornea index of refraction n3 of a cornea of the eye of the patient, and the n2 is equal to (n1*n3)1/2.
A method to block fluorescence radiation generated in an eye of a patient by therapeutic radiation emitted by a laser-based ophthalmological surgical system, the method comprising:
- directing the therapeutic radiation through a contact lens assembly that includes a contact lens and an optical filter coupled to a surface of the contact lens and into the eye of the patient, the optical filter being transparent to the therapeutic radiation and being opaque to the fluorescence radiation;
- and
- blocking the fluorescence radiation generated in the eye of the patient from passing through the contact lens assembly with the optical filter,
- wherein a wavelength of the fluorescence radiation is longer than a wavelength of the therapeutic radiation, and
- wherein the optical filter includes a single layer of polymer with a polymer index of refraction n2 that is different than a lens index of refraction n1 of the contact lens and different than a cornea index of refraction n3 of a cornea of the eye of the patient, and the n2 is equal to (n1*n3)1/2.
Dependencies are inferred from the claim text.