Conformable therapeutic shield for vision and pain
First Claim
1. A covering for an eye of a patient, the eye comprising a cornea having an optical portion, an epithelium, and a sclera, the covering comprising:
- an inner portion having an inner rigidity and at least one inner radius of curvature; and
an outer portion having an outer rigidity and at least one outer radius of curvature;
wherein the inner rigidity is greater than the outer rigidity; and
wherein the covering, when applied to the eye, is configured to flex with the inner portion at least partially disposed over and substantially conforming to the cornea and with the outer portion configured to engage the eye along the epithelium, the sclera, or a combination thereof; and
wherein,the inner portion is centered on an optical portion of the cornea;
the inner portion comprises a modulus from 1 MPa to 35 MPa; and
the outer portion comprises a modulus of no more than 5 MPa.
3 Assignments
0 Petitions
Accused Products
Abstract
A conformable covering comprises an outer portion with rigidity to resist movement on the cornea and an inner portion to contact the cornea and provide an environment for epithelial regeneration. The inner portion of the covering can be configured in many ways so as to conform at least partially to an ablated stromal surface so as to correct vision. The conformable inner portion may have at least some rigidity so as to smooth the epithelium such that the epithelium regenerates rapidly and is guided with the covering so as to form a smooth layer for vision. The inner portion may comprise an amount of rigidity within a range from about 1×10−4 Pa*m3 to about 5×10−4 Pa*m3 so as to deflect and conform at least partially to the ablated cornea and smooth an inner portion of the ablation with an amount of pressure when deflected.
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Citations
11 Claims
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1. A covering for an eye of a patient, the eye comprising a cornea having an optical portion, an epithelium, and a sclera, the covering comprising:
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an inner portion having an inner rigidity and at least one inner radius of curvature; and an outer portion having an outer rigidity and at least one outer radius of curvature; wherein the inner rigidity is greater than the outer rigidity; and wherein the covering, when applied to the eye, is configured to flex with the inner portion at least partially disposed over and substantially conforming to the cornea and with the outer portion configured to engage the eye along the epithelium, the sclera, or a combination thereof; and
wherein,the inner portion is centered on an optical portion of the cornea; the inner portion comprises a modulus from 1 MPa to 35 MPa; and the outer portion comprises a modulus of no more than 5 MPa. - View Dependent Claims (2, 3, 4, 5, 6, 7, 11)
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8. A covering for an eye of a patient, the eye comprising a cornea having an optical portion, an epithelium, and a sclera, the covering comprising:
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an inner portion having an inner rigidity and at least one inner radius of curvature; and an outer portion having an outer rigidity and at least one outer radius of curvature; wherein the inner rigidity is greater than the outer rigidity; and wherein the covering, when applied to the eye, is configured to flex with the inner portion at least partially disposed over and substantially conforming to the cornea and with the outer portion configured to engage the eye along the epithelium, the sclera, or a combination thereof; and
wherein,the inner portion is centered on an optical portion of the cornea; the inner rigidity is from 2.5E-6 Pa-m3 to 6.41E-3 Pa-m3; and the outer rigidity is no more than 4E-5 Pa-m3.
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9. A covering for an eye of a patient, the eye comprising a cornea having an optical portion, an epithelium, and a sclera, the covering comprising:
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an inner portion having an inner rigidity and at least one inner radius of curvature; and an outer portion having an outer rigidity and at least one outer radius of curvature; wherein the inner rigidity is greater than the outer rigidity; and wherein the covering, when applied to the eye, is configured to flex with the inner portion at least partially disposed over and substantially conforming to the cornea and with the outer portion configured to engage the eye along the epithelium, the sclera, or a combination thereof; and
wherein,the inner portion is centered on an optical portion of the cornea; and the inner portion is characterized by a thickness from about 50 μ
m to about 250 μ
m.
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10. A covering for an eye of a patient, the eye comprising a cornea having an optical portion, an epithelium, and a sclera, the covering comprising:
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an inner portion having an inner rigidity and at least one inner radius of curvature; and an outer portion having an outer rigidity and at least one outer radius of curvature; wherein the inner rigidity is greater than the outer rigidity; and wherein the covering, when applied to the eye, is configured to flex with the inner portion at least partially disposed over and substantially conforming to the cornea and with the outer portion configured to engage the eye along the epithelium, the sclera, or a combination thereof; and
wherein,the inner portion is centered on an optical portion of the cornea; and material forming the covering is characterized by a water content of no more than 1%;
an Ionoton Ion Permeability Coefficient of no more than about 2.6×
10-6 mm2/min; and
an oxygen permeability Dk of 100 or more.
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Specification