Accommodative intraocular lens
An accommodative intraocular lens is disclosed. The lens provides multiple focuses as the result of a bi-directional shift along the eye's optical axis, and also minimizes or prevents posterior chamber opacification. The lens includes a first component which consists of an optical body and a haptic body, a second component which is structurally adapted to maintain substantial contact with the posterior surface of the capsular bag of the eye (when implanted in the eye), and a transition zone connecting the first and second components. The method of implanting the lens in the eye and the method of making the lens are also disclosed.
1. An intraocular lens containing a single optical body, comprising:
i. a first component which consists of said optical body and a haptic body adjacent and attached to said optical body;
ii. a second component, located posterior to said first component, which is structurally adapted to maintain substantial contact with the posterior surface of the capsular bag when implanted in the eye;
iii. a transition zone which smoothly connects the first component with the second component; the lens being configured so as to allow the first component to move forward and back relative to the second component, along the optical axis of the optical body; and
iv. at least one groove acting as a guiding structure adapted to assist the optical body of said first component in shifting bi-directionally along said optical axis.
2. The intraocular lens of claim 1 wherein its overall diameter is from about 8 to about 13 mm.
3. The intraocular lens of claim 1 having a central lens thickness of from about 2 to about 5 mm.
4. The intraocular lens of claim 1 wherein said optical body has a diameter of from about 4 to about 7 mm.
5. The intraocular lens of claim 4 having an overall diameter of from about 9 to about 11 mm, a central lens thickness of from about 3 to about 4 mm, a first component radius of curvature from about 9 to about 11 mm, and a second component radius of from about 6 to about 7.5 mm.
6. The intraocular lens of claim 1 wherein said first component has a radius of curvature of from about 8 to about 13 mm.
7. The intraocular lens of claim 1 wherein said second component has a radius of curvature of from about 5 to about 9 mm.
8. The intraocular lens of claim 1 wherein said at least one guiding structure is on the haptic body.
9. The intraocular lens of claim 1 wherein said at least one guiding structure is on the transition zone.
10. The intraocular lens of claim 1 wherein said lens is made from optically clear elastomeric materials.
11. The intraocular lens of claim 10 wherein the elastomeric material is selected from silicones, acrylic materials, hydrogels, and mixtures thereof.