Systems and methods for the regulation of emerging myopia
In accordance with exemplary embodiments of the present invention, an eye is presented with a therapeutic optical structure (e.g., corneal reshaping or by way of a contact lens) that focuses the peripheral image field in at least one meridian in front of the mid peripheral retina. In general, the therapeutic optical structure places the peripheral image field with reference to the retina in the direction and amplitude that growth is needed in order that the emerging myopia would be regulated. In accordance with exemplary embodiments of the present invention, an eye is presented with a therapeutic optical structure that further produces a central retinal image that is focused on the central retina in at least one meridian so as to not reshape the central cornea.
1. A therapeutic optical structure for regulating emerging myopia comprising a central zone, an annular zone, and a peripheral zone,
wherein said central zone has a higher eccentricity than the underlying cornea;
wherein a peripheral aspect of said central zone is configured to not touch the cornea;
wherein the sagittal profile of said annular zone is one of spherical, aspherical, defined by a polynomial, uncurved and defined by an angle, or defined by spline mathematic;
wherein a peripheral aspect and a medial aspect of said annular zone are configured to not touch the cornea;
wherein said annular zone is configured to reshape an aspect of the mid peripheral cornea such that said aspect thereby focuses a peripheral image field in at least one semi-meridian in front of the mid peripheral retina;
wherein a peripheral aspect and a medial aspect of said peripheral zone are configured to not touch the cornea; and
wherein said peripheral zone is in contact with the peripheral cornea between the peripheral aspect and the medial aspect of said peripheral zone.
2. A therapeutic optical structure according to claim 1 , wherein said annular zone is not in contact with the cornea between said peripheral aspect and said medial aspect of said annular zone creating a region into which said aspect of the mid peripheral cornea is reshaped.
3. A therapeutic optical structure according to claim 1 , wherein the central zone is configured to provide at least one of rotational stability, centration and alignment.
4. A therapeutic optical structure according to claim 1 , wherein the annular zone is configured to have a center of curvature that is off axis from the radius of curvature of said central zone.
5. A therapeutic optical structure according to claim 1 , wherein the peripheral zone is configured to be curved and controlled by an angle.
6. A therapeutic optical structure according to claim 5 , wherein the curve of the peripheral zone controlled by an angle is convex to the eye.
7. A therapeutic optical structure according to claim 5 , wherein the curve of the peripheral zone controlled by an angle is aspheric.