Method for creating incision to improve intraocular lens placement
A system and method for insetting an intraocular lens in a patient's eye includes a light source for generating a light beam, a scanner for deflecting the light beam to form an enclosed treatment pattern that includes a registration feature, and a delivery system for delivering the enclosed treatment pattern to target tissue in the patient's eye to form an enclosed incision therein having the registration feature. An intraocular lens is placed within the enclosed incision, wherein the intraocular lens has a registration feature that engages with the registration feature of the enclosed incision. Alternately, the scanner can make a separate registration incision for a post that is connected to the intraocular lens via a strut member.
1. An intraocular lens for insertion into a patient's eye, the intraocular lens comprising:
a lens portion shaped for focusing light passing therethrough; and
a flange having a groove with a radially inner end located radially inward of a peripheral edge of the flange, the groove configured to position and retain the flange within a capsulorhexis incision in the lens capsule of the patient's eye at a rotational orientation with respect to a central optical axis of the lens portion,
wherein the radially inner end of the groove forms a closed and continuous asymmetric annular shape in a plane perpendicular to the optical axis of the lens portion, wherein the closed and continuous asymmetric annular shape is one which, when rotated around the optical axis of the lens portion, coincides with itself only after a 360° rotation.
2. The intraocular lens of claim 1 , wherein the lens portion comprises an astigmatic lens.
3. The intraocular lens of claim 1 , wherein the intraocular lens is configured for use in bag-in-the-lens surgeries.
4. The intraocular lens of claim 1 , wherein the groove is configured to engage the incision continuously.
5. The intraocular lens of claim 1 , wherein the groove is configured to engage the incision discontinuously.
6. The intraocular lens of claim 1 , wherein a depth between the peripheral edge of the flange and the radially inner end of the groove varies around the optical axis to provide a region of reduced depth.
7. The intraocular lens of claim 1 , wherein a depth between the peripheral edge of the flange and the radially inner end of the groove does not vary around the optical axis.
8. The intraocular lens of claim 1 , further comprising one or more radially inward extending notches along the peripheral edge.
9. The intraocular lens of claim 1 , wherein a cross-sectional shape of the groove in a plane parallel to optical axis is V-shaped.