Intraocular prosthetic lens and a method for surgical correction of diseases of the central section of the retina

• US 5,354,334 A
• Filed: 12/08/1992
• Issued: 10/11/1994
• Est. Priority Date: 06/29/1992
• Status: Expired due to Fees

• Current Assignee: Mezhotraslevoi Nauchno-Tecnichesky "Mikrokhirugia Glaza", Mezhotraslevoi Nauchno-Tehnichesky "Mikrokhirurgia Glaza"
• Original Assignee: Komplex "Mikrokhirurgia Glaza" Mezhotraslevoi Nauchno-Tekhnichesky
• Inventors: Ivashina, Albina I., Ismankulov, Almazbek O., Kiselev, Vladimir G., Bessarabov, Anatoly N., Zolotorevsky, Andrei V., Fedorov, Svyatoslav N.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): JONES, MARYBETH O
• Application Number:
  US07/986,831
• Time in Patent Office: 672 Days
• Field of Search: 623/6, 351/160 R, 351/161
• US Class Current: 623/6.32
• CPC Class Codes: A61F 2/1648 Multipart lenses
• CPC Class Codes: A61F 2250/0053 differing in optical properties
• CPC Class Codes: A61F 2250/0097 Visible markings, e.g. indicia

Abstract

An optical body 1 in an intraocular prosthetic lens is made up of a first planoconvex optic element 3 and a second planoconvex optic element 4, both interconnected by their bases. An optic axis 5 of the first planoconvex optic element 3 is offset with respect to the optic axis 6 of the second planoconvex optic element 4.

Claims

1. An intraocular prosthetic lens, comprising an optic body and supporting members, wherein the optic body is made up of a first planoconvex optic element and a second planoconvex optic element, both being interconnected by plane surfaces, and the optic axes of both elements are substantially parallel to the optic axis of the eye and offset relative to each other in a direction perpendicular to the optic axis of the eye.

2. An intraocular prosthetic lens according to claim 1, wherein a radius of curvature of the first optic element is equal to that of the second optic element.

3. An intraocular prosthetic lens according to claim 1, wherein radii of curvature of the interconnected optic elements differ from each other.

4. An intraocular prosthetic lens according to claim 1, wherein a mark is provided on a peripheral portion of the first optic element at a place of maximum displacement of the first optic element with respect to the second optic element.

5. A method for surgical correction of vision in diseases of the central retinal section of a human eye, with the aid of an intraocular prosthetic lens according to claim 1, comprising:

(a) assessing the condition of the eye;

(b) detecting an affection of the central retinal section, and performing central static perimetry for an angular value up to 30°

from the macula lutea to evaluate its functional state;

(c) selecting a new image fixation point, spaced 18 degrees from the macula lutea, in an area of the retina having relatively unaffected local areas;

(d) selecting an amount of displacement of an optic axis of the first planoconvex optic element with respect to the optic axis of the second planoconvex optic element wherein total angle of displacement is equal to a value required for formation of a new image fixation point on a preselected local area;

(e) removing the crystalline lens of the eye, the posterior capsule remaining unaffected, and implanting the intraocular prosthetic lens wherein a mark is provided on a peripheral portion of the first optic element at the place of maximum displacement of the first optic element relative to the second optic element, the first optic element being oriented so that the mark faces the direction of the image.