Intraocular lens
An improved posterior chamber phakic intraocular lens (PCP-IOL) having a haptic with a collar, self-adjusting struts, and lens is disclosed. Haptic or lens of the PCP-IOL may include a protected orifice. A disclosed PCP-IOL may be configured to fit anatomy of varying sizes, and may be self-centering; additionally, a PCP-IOL as set forth herein may allow peripheral aqueous flow between anterior and posterior chambers of a patient's eye.
1. An intraocular medical device having an anterior surface and a posterior surface, the intraocular medical device comprising:
a haptic body having a strut and an anteriorly elevated collar;
a lens secured to the haptic body; and
the collar extends anteriorly beyond the lens; and
a passageway extending between the anterior surface and the posterior surface;
wherein the elevated collar is capable of creating a tented region over the passageway when an eye's iris passes over said collar, allowing the iris to extend over the passageway without clogging, obstructing, occluding or interfering with the passageway;
wherein:
the lens is surrounded by the haptic body and its collar;
the tented region has a thickness along an optical axis that is greater than a length of the passageway between the anterior and posterior surfaces; and
aqueous flow is permitted through the passageway.
2. The intraocular medical device of claim 1 , wherein the passageway extends through the collar or through the lens.
3. The intraocular medical device of claim 2 , wherein the passageway extends through the collar.
4. The intraocular medical device of claim 3 , wherein the collar forms a crescent having tapered ends.
5. The intraocular medical device of claim 4 , wherein the passageway has an elongate cross section.
6. The intraocular medical device of claim 5 , wherein the lens is a positive meniscus or a negative meniscus.
7. The intraocular medical device of claim 6 , wherein the lens is the positive meniscus.
8. The intraocular medical device of claim 6 , wherein the lens is the negative meniscus.
9. The intraocular medical device of claim 1 , wherein the passageway extends through the lens.
10. The intraocular medical device of claim 9 , wherein the passageway is positioned beside the collar.
11. The intraocular medical device of claim 10 , wherein the collar forms a crescent having tapered ends.
12. The intraocular medical device of claim 11 , wherein the passageway is crescent shaped and is positioned beside the collar.
13. The intraocular medical device of claim 12 , wherein the lens is a positive meniscus or a negative meniscus.
14. The intraocular medical device of claim 13 , wherein the lens is the positive meniscus.
15. The intraocular medical device of claim 13 , wherein the lens is the negative meniscus.
16. The intraocular medical device of claim 9 , wherein the strut is adjustable through a distance between about 5 microns and about 3000 microns relative to the haptic body.
17. The intraocular medical device of claim 1 , wherein the collar further protects the passageway from obstruction when an eye pupil is dilated.
18. An intraocular medical device having an anterior surface and a posterior surface, the intraocular medical device comprising:
a haptic body having a strut and an elevated collar;
a lens secured to the haptic body; and
a passageway extending between the anterior surface and the posterior surface;
wherein:
the elevated collar is capable of creating a tented region over the passageway when an eye's iris passes over said collar, allowing the iris to extend over the passageway without clogging, obstructing, occluding or interfering with the passageway;
the collar has a portion extending over the passageway radially inward toward the center of the lens;
the tented region has a thickness along an optical axis that is greater than a length of the passageway between the anterior and posterior surfaces; and
aqueous flow is permitted through the passageway.
19. The intraocular medical device according to claim 18 , wherein the passageway extends through the lens.
20. The intraocular medical device according to claim 18 , wherein the collar further protects the passageway from obstruction when an eye pupil is dilated.