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Method for preparing filmy intraocular lens

An intraocular lens and film type technology, applied in the optical field, can solve the problems of increasing the antireflection optical properties of intraocular lenses, etc., and achieve the effects of small thermal expansion coefficient, controllable film thickness and good compactness

Inactive Publication Date: 2006-07-12
陈晓勇 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no intraocular lens that uses optical film technology to increase the optical characteristics of anti-reflection and anti-reflection of the intraocular lens

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] [Example 1] Preparation of anti-reflection film intraocular lens

[0039] The intraocular lens with PMMA as the main material (select Alcon KC60BN+20D intraocular lens, Alcon (China) Ophthalmic Products Co., Ltd.) (the refractive index of PMMA is 1.491), and the silicone gel (or water) with a refractive index of about 1.41 is selected. Gel) is coating material, the optical thickness nh=(2k-1) * 135nm of thin film, n is the refractive index of film, h is the thickness of thin film, k is any integer, silicon gel is plated on artificial with ion beam method The surface of the lens is formed into a single-layer film; after testing, the prepared anti-reflection film intraocular lens makes the transmittance of green light exceed 90%.

Embodiment 2

[0040] [Example 2] Preparation of anti-reflection film intraocular lens

[0041] The intraocular lens with acrylate as the main material (select Alcon ACRYSOF® SA60AT+20D intraocular lens, Alcon (China) Ophthalmic Products Co., Ltd.). Hydrogel or acrylate is the coating material, the optical thickness of the film is nh=(2k-1)×170nm, n is the refractive index of the film, h is the thickness of the film, and k is any integer. A single-layer film with a lower refractive index than the intraocular lens is coated; the prepared anti-reflection film intraocular lens has a transmittance of more than 90% for red light.

Embodiment 3

[0042] [embodiment 3] preparation of anti-reflective film intraocular lens

[0043] Intraocular lens with PMMA as the main material (Alcon KC60BN +20D intraocular lens, Alcon (China) Ophthalmic Products Co., Ltd.), the refractive index of the intraocular lens is 1.491; the coating material is polycarbonate with a refractive index of about 1.60 As the high film, select nh=(2k-1)×110nm as the optical thickness of the high film, PMMA with a refractive index of 1.491 is used as the low refractive index material, and the high film and the low film interval are coated to form a plurality of reflection-enhancing surfaces, which are respectively coated with 10 Layers and 20 layers of optical film; After testing, the IOL with 10 layers of anti-reflection film reduces the transmittance of blue light by 30%, and the IOL with 20 layers of anti-reflection film reduces the transmittance of blue light by 80%.

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Abstract

The invention discloses a method for preparing thin-film-type artificial crystalline lens and the product prepared with this method. The invention employs normal physical or chemical method to coat the optical thin film on the surface of the artificial crystalline lens, to prepare reflection reducting coating artificial crystalline lens. The method controls the light passing through the artificial crystalline lens by controlling the thickness and layer number of the coating film, to make the light past possess a certain wavelength and intensity, through which can realizes purpose of improving the eyesight quality of the patient using artificial crystal lens.

Description

technical field [0001] The invention relates to an intraocular lens, in particular to a method for preparing a thin-film type intraocular lens and a product prepared by the method, belonging to the field of optics. Background technique [0002] Optical thin films such as anti-reflection film, anti-reflection film, spectroscopic film, filter film, polarizing or depolarizing film, etc. are optical devices designed based on the characteristics of light interference. Optical thin films have been widely used in optical instruments, communications, construction, medical treatment, space technology and other fields, and the continuous development of new processes, new materials, and new technologies make them have very broad application prospects. [0003] The intraocular lens is a material that replaces the removed opacity lens after cataract surgery. At present, the clinical attention of the intraocular lens is mainly on the postoperative optical imaging function. Ordinary intra...

Claims

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Application Information

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IPC IPC(8): A61F2/16B29D11/00
Inventor 陈晓勇王薇
Owner 陈晓勇
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