Variable power intraocular lens and method of implanting into the posterior chamber
First Claim
1. A posterior chamber intraocular lens for an eye comprising:
- a fluid-expandable sac constructed of flexible, transparent material for containing fluid and dimensioned for occupying the posterior chamber of the eye when expanded with fluid in place of at least a portion of the natural lens; and
valve means connected to said sac for extending through the sclera of the eye for selectively varying the optical characteristics of the fluid within said sac in order to vary the optical characteristics of the wearer'"'"'s eye while said sac is in the wearer'"'"'s eye.
0 Assignments
0 Petitions
Accused Products
Abstract
A posterior chamber intraocular lens (34) is provided that can be utilized in a human eye. The posterior chamber intraocular lens (34) includes a fluid-expandable sac (40) for containing a fluid (42). The fluid expandable sac (40) includes a lens portion (36) and a valve portion (38) that extends through the sclera (16) of an eye (10) when the posterior chamber intraocular lens (34) is inserted into the eye (10). In an alternate embodiment, the fluid (42) is a liquid crystal material (52) that is used in combination with an electrode (54) and a microprocessor (56) for changing the index of refraction of the posterior chamber intraocular lens (48) and responds to the desired accommodation.
-
Citations
37 Claims
-
1. A posterior chamber intraocular lens for an eye comprising:
-
a fluid-expandable sac constructed of flexible, transparent material for containing fluid and dimensioned for occupying the posterior chamber of the eye when expanded with fluid in place of at least a portion of the natural lens; and valve means connected to said sac for extending through the sclera of the eye for selectively varying the optical characteristics of the fluid within said sac in order to vary the optical characteristics of the wearer'"'"'s eye while said sac is in the wearer'"'"'s eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A posterior chamber intraocular lens for an eye comprising:
-
(a) a fluid-expandable sac constructed of a transparent flexible material for containing fluid and dimensioned for occupying the posterior chamber of an eye; (b) liquid crystal material contained within said sac having an index of refraction that is variable by an applied voltage; (c) means for producing an input signal proportional to the accommodation of the eye; and (d) microprocessor means electrically coupled to said liquid crystal material and responsive to an input signal for producing an output signal for controlling the index of refraction of said liquid crystal material for achieving the desired accommodation. - View Dependent Claims (19, 20, 21, 22)
-
-
23. A method for removing a natural lens from an eye and for implanting into the eye a posterior chamber intraocular lens comprising:
-
(a) inserting an insertion member through the sclera of the eye and into the posterior chamber; (b) inserting a collapsible, fluid-expandable sac constructed of flexible transparent material through said member and into the posterior chamber; and (c) instilling a fluid into said sac for filling said sac in order to provide an artificial lens. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
-
Specification