Intraocular lens system with folding features
View Patent ↗An intraocular lens (IOL) system includes an active lens element to provide dynamic optical power for active accommodation. The active lens element has mechanical indentations disposed along a perimeter of the active lens element and the mechanical indentations form structurally weakened locations in the active lens element. A first pair of the mechanical indentations defines terminal ends of a first folding line extending between the first pair of the mechanical indentations, and the first pair of the mechanical indentations promotes folding of the active lens element along the first folding line. The IOL system also includes control circuitry coupled to the active lens element to control the active lens element during the active accommodation.
1. An intraocular lens (IOL) system, comprising:
an active lens element including an optical device disposed proximate to a center of the active lens element to provide dynamic optical power;
mechanical indentations disposed along a perimeter of the active lens element that are offset from the optical device and extend partially towards the center of the active lens element, wherein the mechanical indentations form structurally weakened locations in the active lens element, wherein a first pair of the mechanical indentations define terminal ends of a first folding line extending between the first pair of the mechanical indentations, and wherein the first pair of the mechanical indentations promote folding of the active lens element along the first folding line; and
control circuitry coupled to the active lens element to control the active lens element.
2. The IOL system of claim 1 , wherein the first pair of the mechanical indentations are positioned along the perimeter of the active lens element so that the first folding line symmetrically bisects the active lens element in half.
3. The IOL system of claim 2 , further comprising a second pair of the mechanical indentations, wherein a length along the perimeter of the active lens element between all adjacent mechanical indentations is equal.
4. The IOL system of claim 3 , wherein the second pair of the mechanical indentations are disposed to provide symmetry of mechanical indentations.
5. The IOL system of claim 1 , further comprising a second pair of the mechanical indentations, wherein the second pair of the mechanical indentations define terminal ends of a second folding line extending between the second pair of the mechanical indentations, wherein the second pair of the mechanical indentations promote folding of the active lens element along the second folding line, and wherein the first folding line and the second folding line promote folding of the active lens element into three sections.
6. The IOL system of claim 5 , wherein a length along the perimeter of the active lens element between all adjacent mechanical indentations is equal.
7. The IOL system of claim 1 , further comprising a second pair of the mechanical indentations and a third pair of the mechanical indentations, wherein the second pair of the mechanical indentations define terminal ends of a second folding line extending between the second pair of the mechanical indentations, wherein the second pair of the mechanical indentations promote folding of the active lens element along the second folding line, and wherein the first folding line and the second folding line promote folding of the active lens element into three sections.
8. The IOL system of claim 7 , wherein a length along the perimeter of the active lens element between all adjacent mechanical indentations is equal, and wherein at least one mechanical indentation is disposed along the perimeter of the active lens element between the terminal ends of the first folding line and between the terminal ends of the second folding line.
9. The IOL system of claim 8 , wherein the third pair of the mechanical indentations are disposed to provide symmetry of mechanical indentations.
10. The IOL system of claim 8 , wherein a length along the perimeter of the active lens element between all adjacent mechanical indentations is equal, and wherein at least two mechanical indentations are disposed along the perimeter of the active lens element between the terminal ends of the first folding line and between the terminal ends of the second folding line.
11. The IOL system of claim 10 , wherein the third pair of the mechanical indentations and the fourth pair of the mechanical indentations are disposed to provide symmetry of mechanical indentations.
12. The IOL system of claim 1 , further comprising a second pair of the mechanical indentations, a third pair of the mechanical indentations, and a fourth pair of the mechanical indentations, wherein the second pair of the mechanical indentations define terminal ends of a second folding line extending between the second pair of the mechanical indentations, wherein the second pair of the mechanical indentations promote folding of the active lens element along the second folding line, and wherein the first folding line and the second folding line promote folding of the active lens element into three sections.
13. The IOL system of claim 1 , wherein the control circuitry includes:
a control module coupled to control the active lens element;
a power source coupled to provide power to the control module and the active lens element; and
a charging module coupled to provide charge to the power source.
14. The IOL system of claim 13 , wherein the charging module includes an inductive charging system.
15. The IOL system of claim 1 , further comprising an encapsulation layer disposed on an outer surface of the IOL system.
16. The IOL system of claim of claim 15 , wherein the encapsulation layer is included in the active lens element and wherein the mechanical indentations are disposed in the encapsulation layer and are rounded at least in part.
17. The IOL system of claim 1 , wherein the mechanical indentations include at least one of, a score, a divot, a cut, a mark, an inclusion, a perforation, a thinning, or a weakening.
18. The IOL system of claim 1 , wherein each mechanical indentation in the mechanical indentations includes a first score mark disposed on a frontside of the active lens element and a second score mark disposed on the backside, opposite the frontside, of the active lens element.
19. The IOL system of claim 18 , wherein the first score mark and the second score mark are aligned and have an indentation geometry that is the same.
20. The IOL system of claim 1 , wherein the mechanical indentations extend only in part across the active lens element.
21. The IOL system of claim 20 , wherein the mechanical indentations do not contact the optical device in the active lens element.