Accommodating hybrid intraocular lens
The hybrid accommodating intraocular lens comprises an optic made from a flexible material combined with extended portions made of a second flexible material that is capable of multiple flexions without breaking.
1 . An accommodating intraocular lens comprising a flexible optic which is of a different material than attached flexible extended portions, designed such that the optic can move backwards and forwards relative to the outer ends of the extended portions and may assume a position such that the optic can be in front of, in the same plane or behind the outer ends of the haptics and can achieve accommodation by one of (a) without the optic starting in a posterior position ever moving anterior to the outer ends of the extending portions, (b) without the optic starting in an anterior position ever moving posterior to the outer ends of the extending portions, and (c) by the optic moving from a posterior to an anterior or uniplanar position relative to the outer ends of the extending portions.
2 . A lens according to claim 1 wherein said haptics comprise one or more plate haptics.
3 . A lens according to claim 1 wherein one or more fixation devices are on one or more ends of the extended portions.
4 . A lens according to claim 2 wherein the extended portions are plate haptics and there is a groove or hinge across one or more of the plate haptics adjacent to the optic.
5 . A lens according to claim 1 where the optic is acrylic.
6 . A lens according to claim 1 where the optic is a hydrogel.
7 . A lens according to claim 1 where the extended portions are silicone.
8 . A lens according to claim 1 where the extended portions may further include loops and fixation devices and may be a combination of silicone and another inert material, including polyimide, prolene, or PMMA.
9 . A lens according to claim 1 including fixation devices comprising loops made from polyimide, PMMA, or prolene.
10 . A lens according to claim 8 where the loops are of the same material as the plates.
11 . A lens according to claim 10 where the loops have a fixation element of a different material on their proximal ends to enhance centration and fixation of the lens within the capsular bag.
12 . A lens according to claim 1 where the optic size is from 3.5 to 8 mm.
13 . A lens according to claim 1 where the attachment of the extended portions to the optic is by means of projections of the optic material into the flexible haptic.
14 . A lens according to claim 1 where the attachment of the optic to the extended portions is by means of projections of the haptic material into the optic.
15 . A lens according to claim 1 where the attachment of the extended portions to the optic is by means of an encircling band extending from the flexible haptics to encircle a groove 360 degrees around the periphery of the optic.
16 . A lens according to claim 15 where the flexible haptics are flexible plates.
17 . A lens according to claim 16 where the flexible plates have a groove across one or more of the plates adjacent to the optic.
18 . A lens according to claim 16 wherein the extended portions have flexible fixation devices at their outer ends made from a different material.
19 . A lens according to claim 16 wherein the extended portions comprise plates and loops and are made from the same material and further include fixation devices of a different material, including polyimide, prolene, or PMMA.
20 . A lens according to claim 16 wherein the haptics comprise plates, loops, and fixation devices all from the same material.
21 . A lens according to claim 15 wherein the encircling band is formed of silicone and includes an internal ring comprising one of polyimide, nylon or PMMA to prevent the band from dislocating from the optic.