Capsular membrane treatments to increase accommodative amplitude
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 comprising a capsule, the apparatus comprising:
a delivery device configured to be coupled to an intermediate portion of the capsule to deliver one or more of an energy or a substance to the intermediate portion of the capsule to stiffen the intermediate portion of the capsule; and
circuitry coupled to the delivery device to deliver the one or more of the energy or the substance to the eye to stiffen the intermediate portion of the capsule.
2. The apparatus of claim 1 , wherein the energy is selected from the group consisting of laser energy, mechanical energy, electromagnetic energy, RF energy, microwave energy, light energy, UV light energy, visible light energy or infrared light energy.
3. The apparatus of claim 2 , wherein the delivery device is comprised of a probe with a probe tip at a distal end of the probe and wherein the energy is emitted by the probe tip.
4. The apparatus of claim 2 , wherein the energy stiffens the intermediate portion to increase curvature or movement anteriorly of at least a portion of the lens when the eye accommodates.
5. The apparatus of claim 4 , wherein the intermediate portion is stiffened such that far vision of the eye is maintained to within about 1 D and the amount of accommodation of the eye is increased by at least 1 D.
6. The apparatus of claim 1 , wherein the substance is selected from the group
consisting of an adhesive, a tissue fixative, riboflavin, a crosslinker, or a substance to inhibit nutrients to the intermediate portion.
7. The apparatus of claim 6 , wherein the delivery device is comprised of a probe with a probe tip at a distal end of the probe and wherein the energy is emitted by the probe tip.
8. The apparatus of claim 6 , wherein the substance stiffens the intermediate portion to increase curvature or movement anteriorly of at least a portion of the lens when the eye accommodates.
9. The apparatus of claim 8 , wherein the intermediate portion is stiffened such that far vision of the eye is maintained to within about 1 D and the amount of accommodation of the eye is increased by at least 1 D.