Capsular membrane treatments to increase accommodative amplitude
View Patent ↗This apparatus treats the lens capsule so as to increase accommodation of the eye. The treatment of the lens capsule may comprise treating a portion of the lens capsule so as to stiffen the treated portion and improve accommodation of the eye. The intermediate portion of the lens capsule may be located between an optically used central portion of the lens capsule and a peripheral portion of the lens capsule connected to zonules of the eye. The stiffened intermediate portion of the lens capsule can improve coupling of the peripheral portion of the lens capsule to the central portion of the lens capsule, such that an amount of accommodation of the optically used central portion of the lens is increased. As the force of the lens capsule to a lens disposed within the lens capsule is increased, the lens may comprise the natural lens of the eye or an artificial lens such as an accommodative IOL. The treatment of the eye to stiffen the intermediate portion may comprise application of one or more of an energy or a substance to the intermediate portion.
1. An apparatus to treat an eye, the eye having a lens and a capsule, the lens capsule having an intermediate portion extending between a central portion of the lens capsule and a peripheral portion of the lens capsule, the apparatus comprising:
a deflectable structure coupled to the intermediate portion of the lens capsule to deliver an agent to the intermediate portion so as to stiffen the intermediate portion to increase curvature or movement anteriorly of at least a portion of the lens when the eye accommodates.
2. The apparatus of claim 1 , wherein the intermediate portion is treated to stiffen the intermediate portion without shrinking substantially tissue of the intermediate portion such that far vision of the eye is maintained.
3. The apparatus of claim 2 , wherein the intermediate portion is stiffened such that far vision of the eye is maintained to within about 1 D and the an amount of accommodation of the eye is increased by at least about 1 D.
4. The apparatus of claim 1 , wherein the intermediate portion of the capsule is treated so as to maintain optical clarity of the intermediate portion when the intermediate portion is stiffened.
5. The apparatus of claim 1 , wherein the capsule comprises an anterior capsule and the intermediate portion comprises an intermediate portion of the anterior capsule.
6. The apparatus of claim 5 , wherein the lens comprises a natural lens of the eye and wherein the agent is applied to the intermediate portion of the anterior capsule without penetration of the capsule.
7. The apparatus of claim 6 , wherein the central portion of the capsule is coupled to the peripheral portion of the capsule with the stiffened intermediate portion such that the central portion is moved forward when the eye accommodates and the peripheral portion moves inward.
8. The apparatus of claim 7 , wherein the central portion of the lens capsule moves anteriorly along an axis of the eye a first amount and the intermediate portion moves anteriorly along the axis a second amount, the first amount greater than the second amount such that the curvature of the central portion is increased when the eye accommodates.
9. The apparatus of claim 1 , wherein the deflectable structure comprises a first configuration to provide a narrow profile for insertion through the incision and a second configuration to provide a wide profile for placement on the intermediate portion of the capsule.
10. The apparatus of claim 9 , wherein the first configuration comprises one or more of a folded or rotated configuration for passage through the incision and the second configuration comprises an annular or a c-shaped configuration for placement on the intermediate portion of the capsule.
11. The apparatus of claim 1 , wherein the deflectable structure is coupled to the lens capsule with an adhesive and/or mechanical device.