Accommodating intraocular lens
View Patent ↗An intraocular lens for implantation in a capsular bag of an eye includes an optic disposed about an optical axis and a haptic including a protruding portion disposed inside the optic. The optic has an anterior face and an opposing posterior face that are configured to provide a lens power. In response to an ocular force of the eye, the haptic transmits a force that alters one or more of a shape of the optic and an axial thickness of the optic. The protruding portion of the haptic has a refractive index that is equal to a refraction index of the optic for at least one a wavelength within the visible spectrum.
1. An intraocular lens for implantation in a capsular bag of an eye, comprising:
an optic disposed about an optical axis having an axial thickness through the center thereof, an anterior face, and an opposing posterior face, the faces configured to provide a lens power; and
a haptic comprising of a plurality of filaments, each filament comprising of at least one hole, wherein the filaments are connected at their outermost edge by an outer annular ring and at their innermost edge by an inner annular ring, wherein at least a portion of the inner annular ring lies within the circumference of the optic; and
wherein the haptic is pre-stressed.
2. The intraocular lens of claim 1 , wherein the inner annular ring has a maximum axial thickness that is at least one half the axial thickness of the optic.
3. The intraocular lens of claim 1 , wherein the total number of filaments is greater than two.
4. The intraocular lens of claim 1 , wherein the haptic comprises at least two materials having different stiffnesses.
5. The intraocular lens of claim 1 , wherein the haptic is pre-stressed by radial compression.
6. The intraocular lens of claim 1 , wherein the haptic is pre-stressed by radial expansion.
7. The intraocular lens of claim 5 , wherein the inner annular ring has a maximum axial thickness that is at least one half the axial thickness of the optic.
8. The intraocular lens of claim 6 , wherein the inner annular ring has a maximum axial thickness that is at least one half the axial thickness of the optic.
9. The intraocular lens of claim 5 , wherein the total number of filaments is greater than two.
10. The intraocular lens of claim 6 , wherein the total number of filaments is greater than two.
11. The intraocular lens of claim 5 , wherein the haptic comprises at least two materials having different stiffnesses.
12. The intraocular lens of claim 6 , wherein the haptic comprises at least two materials having different stiffnesses.