Method of inserting an intraocular lens
View Patent ↗A method of folding a multiple element IOL comprising folding the first lens element and second lens element such that the second lens element at least partially surrounds the first lens element and such that, after folding, both the first lens element and the second lens element are substantially aligned along the optical axis. A hinged apparatus such as a cartridge may be used to cause the second lens element to be folded. A method of loading a multielement IOL comprising folding the haptics such that a portion of the haptics contacts an exterior side of one of the first lens element and the second lens element.
1. A method of folding a multiple element IOL comprising a first optical element and a second optical element that are aligned along an optical axis, the first optical element and second optical element coupled together by two or more haptics, the method comprising:
folding the first optical element and folding the second optical element; wherein the steps of folding the first optical element and folding the second optical element comprise the steps of: (i) folding the first optical element; and (ii) folding the second optical element such that the second optical element at least partially surrounds the first optical element;
wherein after the steps of folding, both the first optical element and the second optical element are substantially aligned along the optical axis; and the first optical element is folded such that radially outer-most portions of the first optical element are displaced towards the second optical element;
wherein the step of folding the first optical element occurs prior to the step of folding the second optical element.
2. The method of claim 1 , wherein after said step of folding, the second optical element is configured to form a single concavity in which the first optical element is disposed.
3. The method of claim 1 , wherein the step of folding the first optical element comprises folding the first optical element substantially along its centerline.
4. The method of claim 1 , wherein the step of folding the second optical element comprises folding the second optical element substantially along its centerline.
5. The method of claim 1 , wherein the first optical element is an anterior optical element and the second optical element is a posterior optical element.
6. The method of claim 1 , wherein the first optical element is a posterior optical element and the second optical element is an anterior optical element.
7. The method of claim 1 , wherein the second optical element is more massive than the first optical element.
8. The method of claim 1 , wherein after said step of folding, at least a portion of an interior surface of the second optical element contacts at least a portion of an exterior surface of said first optical element.
9. The method of claim 1 , wherein the step of folding the second optical element comprises (1) locating the second optical element on a hinged apparatus, the hinged apparatus comprising a first portion and a second portion, the first portion being connected to the second portion by a hinge; and (2) rotating the first portion relative to the second portion.
10. The method of claim 9 , further comprising loading the hinged apparatus into an IOL inserter while maintaining the IOL in the hinged apparatus.
11. The method of claim 10 , further comprising actuating the IOL inserter to insert the IOL into an eye.
12. The method of claim 11 , wherein the step of actuating the IOL inserter results in compression of the IOL prior to insertion in the eye.
13. The method of claim 1 ; wherein
the step of folding the first optical element comprises folding the first optical element such that outer portions of the first optical element are displaced towards the second optical element, resulting in said IOL having a folded first optical element; and
the step of folding the second optical element comprises:
(i) locating the second optical element of said IOL that has such folded first optical element on a hinged apparatus having a first portion and a second portion coupled together by a hinge, the hinge extending across the optical axis; and
(ii) with the second optical element so located, rotating the first portion of the hinged apparatus relative to the second portion of the hinted apparatus to cause the second optical element to be folded such that the second optical element at least partially surrounds the first optical element and such that, after folding, both the first optical element and the second optical element are substantially aligned along the optical axis;
wherein said method produces a folded multiple element IOL.
14. The method of claim 13 , wherein the first optical element is an anterior optical element and the second optical element is a posterior optical element.
15. The method of claim 13 , wherein the first optical element is a posterior optical element and the second optical element is an anterior optical element.
16. The method of claim 13 , wherein the second optical element is more massive than the first optical element.
17. The method of claim 13 , wherein after said step of rotating, at least a portion of an interior surface of the second optical element contacts at least a portion of an exterior surface of said first optical element.
18. The method of claim 13 , further comprising loading the hinged apparatus into an IOL inserter while maintaining such folded multiple element IOL in the hinged apparatus.
19. The method of claim 18 , further comprising actuating the IOL inserter to insert the IOL into an eye.
20. The method of claim 18 , the step of actuating the IOL inserter results in compression of the IOL prior to insertion in the eye.
21. The method of claim 13 , wherein the hinged apparatus comprises a longitudinal axis, wherein the hinge is aligned such that the first portion rotates about an axis parallel to the longitudinal axis.