Artificial crystalline lens

A technology of intraocular lens and crystalline lens, which is applied in intraocular lens, prosthesis, medical science, etc., and can solve problems such as posterior capsule opacification

Inactive Publication Date: 2005-02-16
BAUSCH & LOMB INC
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0011] The present invention solves the problem of posterior capsular opacification beyond the first sharp posterior edge of the intraocular lens by providing an intraocular lens comprising at least two radially spaced sharp edges extending from the posterior An edge, a peripheral wall extending substantially parallel to the optical axis of the intraocular lens, and an interceding peripheral wall extending substantially perpendicular to the optical axis define

Method used

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  • Artificial crystalline lens
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Embodiment Construction

[0022] Referring to the drawings, in the cross-sectional view of FIG. 1 , a human eye 10 has an anterior chamber 12 and a posterior chamber 14 separated by an iris 30 . In the posterior chamber 14 the inner capsule 16 houses the innate lens 17 of the eye. Light enters the eye through the cornea 18 to the natural lens 17, which together work to direct and focus the light onto the retina 20 at the back of the eye. The retina 20 is connected to the optic nerve 22, which transmits the images received by the retina to the brain for interpretation of the images.

[0023] In an eye where the natural lens is damaged (obscured, for example, by a cataract), the natural lens is no longer able to properly focus and direct incoming light onto the retina, and images become blurred. A known procedure to correct this condition involves removing the damaged natural lens and replacing it with an artificial lens called an intraocular lens or IOL, such as in figure 2 and the prior art intraocul...

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Abstract

An intraocular lens for inhibiting posterior capsular opacification, or secondary cataract, includes an optic having a periphery provided with at least two sharp edges which lie radially spaced from each other with respect to the optical axis of the lens optic.

Description

technical field [0001] The present invention relates to intraocular lenses (IOLs) for implantation into aphakic eyes in which the natural lens has been removed due to damage or disease (eg cataract lens). The present invention more specifically contemplates a novel intraocular lens designed to inhibit the undesirable growth of lens epithelial cells (LECs) between the intraocular lens and the posterior capsular bag (also referred to by those skilled in the art as posterior lens epithelial cells). Capsular opacification or "PCO"). Background technique [0002] The usual way to treat a cataract eye is to remove the cloudy natural lens and replace it with an intraocular lens in a surgical procedure called cataract extraction. In the extracapsular extraction method, the natural lens is removed from the capsular bag, leaving the posterior portion of the capsular bag (and preferably at least part of the anterior portion of the capsular bag) in place in the eye. In this case, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L27/00A61F2/16
CPCA61F2/1613A61F2002/1699A61F2/16
Inventor 海-明·彭姆图安·安·恩古颜
Owner BAUSCH & LOMB INC
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