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Accommodative intraocular lens system

一种人工晶状体、晶状体的技术，应用在眼内晶体、假体、医药科学等方向

Active Publication Date: 2010-10-13
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, α cannot be greater than 2, which limits the range of known biphasic accommodation methods

Method used

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  • Accommodative intraocular lens system
  • Accommodative intraocular lens system
  • Accommodative intraocular lens system

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Embodiment Construction

[0022] The refractive power of the lens surface is primarily determined by two physical parameters, the difference in refractive index between the lens and the medium in which the lens is immersed (eg air or aqueous humor) and the radius of curvature of the lens surface. Each of these parameters affects how much light is refracted at the surface of the lens, thereby determining the lens' optical power.

[0023] like figure 1 and figure 2 Best seen in , the lens system 10 of one embodiment of the present invention primarily includes an anterior lens 12 and a posterior lens 14 . Anterior lens 12 includes anterior optic 16 connected to anterior peripheral ring 18 by a plurality of haptics 20 . The anterior lens 12 may be made in one piece from a deformable material such as silicone, hydrogel, or soft acrylic. The posterior lens 14 includes an anterior optic 22 that may be connected to and integrally formed with a posterior peripheral ring 24 . Posterior lens 14 may be made i...

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Abstract

A two optic accommodative lens system wherein at least one of the optics is deformable. When compressed by the capsular bag, the two optics press against each other, deforming at least one of the optics. As a result, the interface where the two optics meet changes shape, thereby altering the refractive power of the lens system.

Description

technical field [0001] The present invention generally relates to the field of intraocular lenses (IOLs), and more particularly to the field of accommodative IOLs (accommodative IOLs). Background technique [0002] From the simplest point of view, the function of the human eye is to provide vision by transmitting light through a transparent exterior called the cornea and focusing the image on the retina by means of a lens. The quality of the focused image depends on many factors, including the size and shape of the eye and the transparency of the cornea and lens. [0003] When age or disease causes the lens to become opaque, vision deteriorates because less light can be transmitted to the retina. This defect in the lens of the eye is medically known as a cataract. An acceptable treatment for this condition is surgical removal of the lens, followed by replacement of the lens function with an intraocular lens (IOL). [0004] In the United States, most cataractous lenses are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1635A61F2/1613A61F2/1648A61F2250/0018
Inventor J·魏因申克三世张晓啸
Owner ALCON INC