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One-dimensional photonic crystal-based colorful contact lenses and preparation method thereof

A technology of dimensional photonic crystals and contact lenses, which is applied in the field of color contact lenses and its preparation, to achieve the effects of good practicability, broad market prospects, and safe wearing

Inactive Publication Date: 2015-01-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a color contact lens based on one-dimensional photonic crystal and its preparation method, which avoids a series of safety problems caused by the use of pigment layer in the color forming step in the prior art, and greatly improves the color contact lens performance. safety and color stability

Method used

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  • One-dimensional photonic crystal-based colorful contact lenses and preparation method thereof
  • One-dimensional photonic crystal-based colorful contact lenses and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 Preparation of colored contact lenses based on one-dimensional photonic crystals:

[0032] (1) Selection of contact lens molds:

[0033] Select the contact lens mold that can be bought on the market as the base material for preparing colored contact lenses;

[0034] (2) Preparation of hydrogel prepolymer solution for colored contact lenses:

[0035] Select two media with different refractive indices, the size of the media is between 5 nanometers and 300 nanometers, and the mass volume ratio concentration of the prepared hydrogel prepolymer solution is between 2% and 80%;

[0036] (3) Preparation of the iris area of ​​colored contact lenses:

[0037] Add the hydrogel prepolymer solution prepared in step (2) alternately to the iris area of ​​the contact lens mold selected in step (1), and repeatedly drop it several times to form a layer-by-layer structure on the surface of the contact lens mold. One-dimensional photonic crystal structure, wherein the thi...

Embodiment 2

[0040] Example 2 Preparation of structural color contact lenses by layer-by-layer self-assembly method:

[0041] (1) Selection and preparation of hydrogel prepolymer solution for colored contact lenses:

[0042] Select two media with different refractive indices, the size of the media material is between 5 nanometers and 300 nanometers, and the mass volume ratio concentration of the prepared hydrogel prepolymer solution is between 2% and 80%;

[0043] (2) Preparation of the iris area of ​​the colored contact lens:

[0044] The colored contact lens hydrogel prepolymer solution obtained in step (1) is sequentially coated on the iris area of ​​the contact lens mold, dried in a nitrogen-saturated state, and a one-dimensional photon Crystal structure of the iris region;

[0045] (3) Curing and hydration of colored contact lens lenses:

[0046] After the pupil area of ​​the contact lens is polymerized with HEMA solution, it is hydrated in ultrapure water for 48 hours, and then ...

Embodiment 3

[0047] Embodiment 3 Performance testing of colored contact lenses based on one-dimensional photonic crystals:

[0048] (1) Light transmission test:

[0049] Structural colored contact lenses based on one-dimensional photonic crystals were selected as the test object, and the light transmittance of the pupil area was tested, and the results showed that the light transmittance of white light was above 94%;

[0050] (2) Water content test:

[0051] After the contact lens material is saturated with water, the moisture accounts for 40%-64% of the total weight, and the lens is a medium or high water content lens.

[0052] (3) Lens center thickness test:

[0053] Select the central pupil area of ​​the lens, and measure its thickness to be 0.05-0.06mm. The result shows that the lens is a medium-standard lens.

[0054] (4) Cytotoxicity test of lenses:

[0055]The test adopts the ISO9363-1 method to observe the safety performance of the contact lens by examining the cytotoxicity o...

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Abstract

The invention discloses a color contact lens based on a one-dimensional photonic crystal. The iris region of the color contact lens has a one-dimensional photonic crystal structure that makes the lens of the color contact lens have multiple colors. The invention also discloses its preparation The method, the main steps include: preparing a hydrogel prepolymer solution with a medium, repeatedly and alternately dripping and drying the hydrogel prepolymer solution on the iris area of ​​the contact lens mold to form a one-dimensional photonic crystal structure, and then The pupil area of ​​the contact lens mold is added with contact lens raw material, and after curing, the colored contact lens is made by releasing the mold. The invention uses physical coloring and the bright structural color of one-dimensional photonic crystals to realize the coloring of colored contact lens lenses, which improves the color stability, biocompatibility and safety of the lenses, makes it safer to wear, and has good practicability and broad market prospects.

Description

technical field [0001] The invention relates to the field of contact lenses, in particular to a colored contact lens and a preparation method thereof. Background technique [0002] With the development of society, colored contact lenses are becoming more and more popular, especially sought after by young people, and have broad market prospects and practical value. [0003] However, the safety problems of color contact lenses currently on the market are relatively serious, and the "recall door" event of many color contact lenses has aroused the attention of the society. The main reason for its harm is that the traditional lens preparation is inseparable from the pigment layer, and the biotoxic pigment layer will hinder the exchange of oxygen and water molecules between the eyes and the outside world, reducing the oxygen permeability and moisture retention of the lens. At the same time, the pigment layer is easy to fall off, which makes the color stability of the lens poor. ...

Claims

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Application Information

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IPC IPC(8): G02C7/04B29D11/00
Inventor 赵远锦李婷婷陆洁刘慈慧顾忠泽
Owner SOUTHEAST UNIV
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