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Intraocular lenses provided with angled edges to prevent posterior capsular opacification

A lens, edge technology, applied in the field of IOLs with angular edges, can solve the problems of induced astigmatism, increased incidence of complications, etc.

Inactive Publication Date: 2005-02-16
BAUSCH & LOMB INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, more rigid IOLs are less popular in the market due to the need for larger incisions, which tends to lead to an increased incidence of postoperative complications such as induced astigmatism

Method used

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  • Intraocular lenses provided with angled edges to prevent posterior capsular opacification
  • Intraocular lenses provided with angled edges to prevent posterior capsular opacification
  • Intraocular lenses provided with angled edges to prevent posterior capsular opacification

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Embodiment Construction

[0036] figure 1 It is a schematic diagram of the eye, showing the structure of the eye, which is related to the transplantation of the intraocular lens (IOL) 12 according to the present invention. The eye includes a transparent cornea 14 and iris 16. The lens capsule 18 and the retina 20 are arranged behind the iris 16 of the eye 10. The eye 10 also includes an anterior cavity 22 located in front of the iris 16 and a posterior cavity 24 located between the iris 16 and the lens 18. The IOL is preferably implanted in the lens capsule 18 of an aphakic eye. When they are used in aphakic eyes, IOL 12 is used to replace the diseased natural lens that is surgically removed, for example after cataract surgery. The eye 10 also includes an optical axis OA-OA, which is an imaginary line passing through the optical center of the anterior surface 30 and the posterior surface 32 of the lens capsule 18. The optical axis OA-OA in the human eye 10 is generally perpendicular to the retina 14, per...

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Abstract

An intraoluclar refractive lens comprises an optic portion (34) with an outer peripheral edge (36) and one or more, preferably two, three or four equidistant haptic elements (38). Each haptic element (38) has the same shape, with a trapezoid or rhomboid cross-section. The edge of the outer rear surface of each haptic element (38) and the edge of the rear optic element are shaped like acute angles to prevent posterior capsular opacification.

Description

Technical field [0001] The present invention relates to intraocular lenses (IOL) and methods of producing and using such lenses. In particular, the present invention relates to an IOL with an angular edge to prevent the opacity of the posterior capsule of the aphakic lens after the natural lens of the eye is surgically removed. Background technique [0002] Cataract removal surgery forms part of the most common surgery in the United States and around the world. The lens is located in the so-called capsular sac or the lens capsule in the posterior cavity of the eye. To approach the lens of an eye with a cataract, the usual method is to make an incision at the edge of the eye to allow surgical instruments to enter the anterior cavity of the eye. In the case of extracapsular cataract removal, follow up with a capsulorhexis. Among them, the inner membrane of the lens capsule close to the iris of the eye is removed with surgical instruments to form a direct entrance from the anterior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/16A61F2/1613A61F2002/1683A61F2002/1699A61F2002/1681
Inventor 乔尔·平森
Owner BAUSCH & LOMB INC
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