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Intraocular lens resistant to eccentricity and inclination clinically

An intraocular lens and eccentric technology, applied in the direction of intraocular lens, eye implant, etc., can solve the problems of image quality degradation and poor image quality, and achieve the effects of reducing sensitivity, improving vision, and increasing pseudo-accommodative power

Pending Publication Date: 2020-09-15
XIAN PILLAR BIOSCI CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

Once these crystals are eccentric or tilted, the imaging quality drops even worse than that of spherical IOLs with the same degree of eccentricity

Method used

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  • Intraocular lens resistant to eccentricity and inclination clinically
  • Intraocular lens resistant to eccentricity and inclination clinically
  • Intraocular lens resistant to eccentricity and inclination clinically

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific technical solutions and implementation methods.

[0041] The innovations and advantages of the design of the present invention will be apparent from the following detailed description of the preferred technical features of the present invention in conjunction with the accompanying drawings.

[0042] Aberration is an important factor affecting postoperative visual quality. Aberrations are divided into low-order aberrations and high-order aberrations. In the human eye, 83% to 95% of low-order aberrations and 5% to 17% of high-order aberrations are distributed. Low-order aberrations are easy to correct, while high-order aberrations are difficult to correct, and the higher the order, the more difficult it is to correct. The study found that in addition to spherical aberration, coma aberration is also included in the high-order aberrations that increase with ag...

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Abstract

The invention belongs to the technical field of ophthalmic lenses, and particularly relates to an intraocular lens resistant to eccentricity and inclination clinically. The intraocular lens resistantto eccentricity and inclination clinically is a high-order aspheric intraocular lens with weak negative spherical aberration, and the intraocular lens is placed in a posterior chamber of the human eyeto replace a turbid natural lens. The intraocular lens has the weak negative spherical aberration of-0.1 micron - 0, and plays a role in compensating the positive spherical aberration of the human cornea. The intraocular lens comprises an anterior optical surface and a posterior optical surface, wherein at least one of the anterior optical surface and the posterior optical surface is an asphericoptical surface. The intraocular lens provided by the invention has better contrast sensitivity under a dark light condition (namely under a large-aperture diaphragm), and can improve the overall imaging quality of an intraocular lens eye under a real postoperative clinical condition.

Description

technical field [0001] The invention belongs to the field of ophthalmic lens technology, and more particularly relates to a posterior chamber lens, such as an intraocular lens, which is resistant to eccentricity and tilt under clinical conditions. Background technique [0002] In recent years, phacoemulsification surgery has developed into a crystalline refractive surgery. People's requirements for surgery have changed from "visible" to "clear." Cataract surgery has changed from traditional vision restoration surgery to the pursuit of High-quality visual quality is required. [0003] The human eye system is actually a refractive imaging system, and the image formation of the natural human eye is completed through the combination of the eye medium and the interface. The cornea is the first refractive part of the human eye system. It is a lens with a certain asphericity, and it undertakes more than 70% of the refractive function in the human eye. The shape, refractive power ...

Claims

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Application Information

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IPC IPC(8): A61F2/16
CPCA61F2/164A61F2/1618
Inventor 贾海妮叶鸣
Owner XIAN PILLAR BIOSCI CO LTD
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