Posterior chamber type phakic intraocular lens

A technology of intraocular lens and lens, which is applied in the direction of intraocular lens, prosthesis, eye implant, etc., can solve the problems affecting the visual quality of human eyes, poor human eyeballs, etc., and achieve the effect of ensuring no glare and good imaging quality

Pending Publication Date: 2018-05-29
EYEBRIGHT MEDICAL TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing phakic intraocular lens implantation will bring a lot of spherical aberration to the human eye, which will affect the visual quality of the human eye, especially in dark conditions or when the human pupil is large.

Method used

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  • Posterior chamber type phakic intraocular lens
  • Posterior chamber type phakic intraocular lens
  • Posterior chamber type phakic intraocular lens

Examples

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Embodiment Construction

[0036] According to the inventive idea of ​​the present invention, the edge thickening of the optical part of the intraocular lens on the posterior surface (the surface close to the natural lens) is moved to the anterior surface (the surface close to the cornea) by using the biconcave surface shape, so that the intraocular lens Under the premise of maintaining the same diopter, the gap between the posterior surface and the natural lens increases; at the same time, the crown height is reduced, and the optical part is enlarged, thereby maintaining a stable room angle.

[0037] Figure 5a Shows the position of the conventional IOL in the human eye with an anterior flat posterior concave shape (that is, the anterior surface is flat and the posterior surface is concave), where H1 is the distance between the center of the optical part of the posterior surface of the IOL and the natural lens, and H2 is The distance between the edge of the optic portion of the posterior surface of the...

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Abstract

The invention discloses a posterior chamber implanted phakic intraocular lens. The intraocular lensis made of an acrylic material with high index of refraction, and is composed of an optical part anda supporting part. The intraocular lensis implanted between a natural lens and an iris, andis supported in a ciliary groove by a loop matched with the size of the ciliary groove. The intraocular lenshas a roundedposterior surface and a biconcave shape,spherical aberration is small, and the optical part is large. The intraocular lens can ensure the safetygap betweeneye tissues and the intraocularlens after implantation, and has no glare and better imaging quality.

Description

technical field [0001] The present invention relates to phakic intraocular lenses, and more particularly to posterior chamber phakic intraocular lenses. Background technique [0002] The posterior chamber phakic intraocular lens consists of an optical part and a supporting part, which is implanted between the natural lens and the iris, and the haptics are supported in the ciliary sulcus, such as figure 1 As shown, it is used to change the refractive state of the human eye, especially to correct high myopia. [0003] For phakic intraocular lenses, in addition to realizing the function of refractive correction, an important consideration is the safety of the structure of the intraocular lens after implantation. [0004] After implantation of phakic intraocular lens, a sufficient distance must be maintained between the corneal endothelium and the natural lens to prevent damage to the corneal endothelium or clouding of the natural lens due to contact between the intraocular len...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16A61L27/16
CPCA61L27/16A61F2/161A61L2430/16C08L33/08
Inventor 王曌解江冰
Owner EYEBRIGHT MEDICAL TECH BEIJING
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