Intraocular lenses provided with angled edges to prevent posterior capsular opacification

A lens and eye technology, applied in the direction of intraocular lenses, eye implants, etc., can solve the problems of increased incidence of complications and induced astigmatism

Inactive Publication Date: 2007-09-26
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 is a schematic diagram of an eye showing the structure of the eye involved in the implantation of an intraocular lens (IOL) 12 according to the present invention. The eye includes a transparent cornea 14 and iris 16 . Lens capsule 18 and retina 20 are disposed behind iris 16 of eye 10 . Eye 10 also includes an anterior chamber 22 located in front of iris 16 and a posterior chamber 24 located between iris 16 and lens 18 . The IOL is preferably implanted within the lens capsule 18 of the aphakic eye. When they are used in aphakic eyes, IOLs 12 are used to replace surgically removed diseased natural lenses, such as after cataract surgery. Eye 10 also includes an optical axis OA-OA, which is an imaginary line passing through the optical center of anterior surface 30 and posterior surface 32 of lens capsule 18 . Optical axis OA-OA in human eye 10 is generally perpendicular to retina 14 , perpendicular to lens 18 and cornea 20 .

[0037] An IOL according to the p...

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PUM

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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] This invention relates to intraocular lenses (IOLs) and methods of making and using such lenses. In particular, the present invention relates to IOLs having angled edges to prevent opacification of the posterior capsule in an aphakic eye following surgical removal of the natural lens of the eye. Background technique [0002] Cataract removal surgery forms part of the most common surgeries in the United States and around the world. The lens is located in what is called the capsular sac, or lens capsule in the back cavity of the eye. Accessing the lens of a cataracted eye, the usual approach 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, a capsulorhexis is followed. In this, the portion of the inner membrane of the lens capsule adjacent to the iris of the eye is surgically removed to create a direct entrance from the anterior cavity int...

Claims

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Application Information

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