ACCOMMODATING INTRAOCULAR LENSES
Accommodating intraocular lenses including an optic having an anterior element and a posterior element defining an optic fluid chamber, wherein the optic is aspheric across all powers throughout accommodation or disaccommodation. Intraocular lenses, optionally accommodating, where an optic portion is centered with a midline of a height of the peripheral portion, the height measured in the anterior to posterior direction.
1 . An accommodating intraocular lens, comprising:
an optic portion comprising an optic fluid chamber; and
a haptic having a proximal portion coupled to the optic portion and a free distal portion, the haptic comprising a haptic fluid lumen extending through the haptic and in fluid communication with the optic fluid chamber,
wherein the entire haptic subtends an angle of greater than 100 degrees around the optic portion.
2 . The accommodating intraocular lens of claim 1 , wherein the haptic follows only part of a curved radially outer peripheral surface of the optic portion.
3 . The accommodating intraocular lens of claim 1 , wherein the entire haptic subtends an angle of between 175 degrees and 180 degrees around the optic portion.
4 . The accommodating intraocular lens of claim 1 , wherein the haptic fluid lumen is defined in part by a segment of a haptic first wall and a segment of a haptic second wall facing the segment of the haptic first wall, wherein the haptic first wall is radially inward from the haptic second wall with respect to the optic portion, wherein a thickness of the segment of the haptic first wall is greater than a thickness of the segment of the haptic second wall in a radial direction, and wherein the segment of the haptic first wall subtends an angle of about 40 degrees around the optic portion.
5 . The accommodating intraocular lens of claim 4 , wherein the haptic first wall is between about two times and about three times the thickness of the haptic second wall.
6 . The accommodating intraocular lens of claim 1 , wherein the haptic is made of a material configured to deform in response to forces on the haptic due to ciliary muscle movement when the haptic is deployed within a capsular bag of an eye, wherein deformation of the haptic moves a fluid from the haptic fluid lumen into the optic fluid chamber to change an optical parameter of the accommodating intraocular lens.
7 . The accommodating intraocular lens of claim 5 , wherein walls of the haptic are configured to allow the haptic to deform more in response to forces in a radial direction than it is to forces in an anterior-to-posterior direction.
8 . The accommodating intraocular lens of claim 7 , wherein the walls of the haptic are configured such that a greater volume of fluid moves between the haptic fluid lumen and the optic fluid chamber in response to forces on the haptic in the radial direction than in response to forces on the haptic in the anterior-to-posterior direction.
9 . An intraocular lens, comprising:
an optic portion; and
a haptic having a proximal portion coupled to the optic portion and a free distal portion,
wherein an anterior-most portion of the haptic is disposed further anterior to an anterior-most portion of the optic portion; and
wherein a posterior-most portion of the haptic is not disposed further posterior to a posterior-most portion of the optic portion.
10 . The intraocular lens of claim 9 , wherein the optic portion comprises an optic fluid chamber, wherein the haptic comprises a haptic fluid lumen extending through the haptic, and wherein the haptic fluid lumen is in fluid communication with the optic fluid chamber.
11 . The intraocular lens of claim 10 , wherein the haptic fluid lumen is in fluid communication with the optic fluid chamber through a plurality of fluid channels.
12 . The intraocular lens of claim 10 , wherein fluid flow between the optic fluid chamber and the haptic fluid lumen in response to a deformation of the haptic results in accommodation or disaccommodation.
13 . The intraocular lens of claim 12 , wherein the haptic fluid lumen is defined in part by a haptic first wall and a haptic second wall facing the haptic first wall, wherein the haptic first wall is radially inward from the haptic second wall with respect to the optic portion, wherein a thickness of the haptic first wall is greater than a thickness of the haptic second wall in a radial direction.
14 . An accommodating intraocular lens, comprising:
an optic portion comprising an optic fluid chamber;
a haptic comprising a haptic fluid lumen defined in part by a haptic first wall and a haptic second wall, wherein the haptic first wall is radially inward from the haptic second wall with respect to the optic portion; and
an access pathway defined in between a radially outer peripheral surface of the optic portion and part of the haptic first wall.
15 . The accommodating intraocular lens of claim 14 , wherein the access pathway is a space or opening allowing an irrigation device or aspiration device to enter and suction out or remove viscoelastic fluid from the eye.
16 . The accommodating intraocular lens of claim 14 , wherein a thickness of the haptic first wall varies along a length of the haptic.
17 . The accommodating intraocular lens of claim 14 , wherein the haptic fluid lumen is in fluid communication with the optic fluid chamber through a plurality of fluid channels.
18 . The accommodating intraocular lens of claim 14 , wherein the haptic comprises a proximal portion coupled to the optic portion and a free distal portion.
19 . The accommodating intraocular lens of claim 14 , wherein the haptic follows only part of a curved radially outer peripheral surface of the optic portion.
20 . The accommodating intraocular lens of claim 14 , wherein the entire haptic subtends an angle of between 175 degrees and 180 degrees around the optic portion.