Intraocular lens system

• US 4,816,031 A
• Filed: 01/29/1988
• Issued: 03/28/1989
• Est. Priority Date: 01/29/1988
• Status: Expired due to Term

• Current Assignee: David S. Pfoff
• Original Assignee: David S. Pfoff
• Inventors: Pfoff, David S.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/150,042
• Time in Patent Office: 424 Days
• Field of Search: 623/6
• US Class Current: 417/413.3
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1635 for changing shape
• CPC Class Codes: A61F 2/1648 Multipart lenses
• CPC Class Codes: A61F 2250/0053 differing in optical properties
• CPC Class Codes: G02C 7/085 Fluid-filled lenses, e.g. electro-wetting lenses

Abstract

An intraocular lens including a PMMA intraocular lens implant, a second soft and pliable lens disposed thereover such as that of silicon, and electromechanical circuitry for regulating the distance between the soft silicon lens and the hard PMMA lens. The electromechanical circuitry can include a microsolar power cell, a microprocessor, a microfluid pump, a micro reservoir for fluid, and a micro DC storage cell. The electromechanical circuitry provides for adjustment of the focal point of the lens system for accommodation from distance to near vision.

Claims

1. Intraocular lens system for implantation in an eye, comprising:

a. implantable intraocular first lens means constructed of a substantially stiff material including means for supporting said lens means in an anterior chamber or a posterior chamber of said eye;

b. second movable lens means constructed of a material of a soft and pliable nature secured to and disposed over said first lens means, said second lens means of a material for positioning of said second lens at a distance away from said first lens;

c. means for moving said center of said second lens said distance away from said first lens, said movement means positioned in and about said first lens means, and connected to space between said first and second means;

wherein said movement means comprises;

(i) fluid reservoir means positioned about the circumference of said first leans means;

(ii) pump means and valve means, said pump means being connected between said reservoir and said valve means; and

,

(iii) means for connecting said valve means to said space between said first and second lens means.

2. System of claim 1 wherein said first lens means is an anterior chamber lens.

3. System of claim 2 wherein said first lens means is of PMMA material.

4. System of claim 1 wherein said first lens means is a posterior chamber lens.

5. System of claim 4 wherein said first lens means is of PMMA material.

6. System of claim 1 wherein said second movable lens means is of pliable rubber and secured about an edge of said first lens means.

7. System of claim 6 wherein said pliable rubber is silicon rubber.

8. System of claim 6 wherein said pliable rubber is urethane.

9. System of claim 1 wherein said fluid is distilled water.

10. Intraocular lens system for implantation in an eye, comprising:

a. intraocular first lens means including means constructed of a substantially stiff material for supporting said lens means in an anterior or posterior chamber of the eye;

b. second movable lens means secured to a periphery of said first lens means and disposed over said first lens means, said second means of a material of a soft and pliable nature for positioning over said first lens means at a distance away from said first lens means;

c. means for storing fluid in a perimeter reservoir about a circumferential edge of said first lens means;

d. means situated within said first lens means for pumping fluid from said reservoir means to space between said first lens means and said second lens means, said pump means connected to said reservoir means, and valving means connected between said pump means and said space between said first lens means and second lens means; and

,

e. means for controlling said pump, said means including computer means for turning said pump on and off on an external command whereby said controlling means controls said pump means for pumping fluid from said fluid storage means for allowing for accommodation from distance to near vision of the focal point between said first lens means and said second lens means thereby fine tuning the focal point of a lens implanted into said eye.

11. System of claim 10 wherein said first lens means if of PMMA material.

12. System of claim 10 wherein said second lens means is of silicon material.

13. System of claim 10 wherein said controlling means is a RF signal external to the eye.