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Method for modifying hydrophility of plasmons at surface of fluorine and silicon hard corneal contact lens

A surface plasmon and contact lens technology, applied in plasma, glasses/goggles, optics, etc., can solve the problems affecting the wearing comfort of glasses, poor hydrophilicity, and affecting deposition, etc., to achieve mass production, Increased hydrophilicity and reduced deposition

Active Publication Date: 2010-06-09
SCHOOL OF OPHTHALMOLOGY & OPTOMETRY WENZHOU MEDICAL COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better quality opaque soft contacts made from fluorosilicate materials without changing their properties or having issues associated therewith during manufacturing processes. Additionally, this new method doesn't use harmful substances like chlorine dioxide which could affect patient health if used inside an eye care device. Overall, these technical improvements make it easier and safer to produce oxygenated compatible contact lenses suitable for long-term wear.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the performance of gas permeably flexible hard contacts used in eyewear such as RPG lenses while maintaining their safe and effective use over time without causing discomfort or other issues associated therewith.

Method used

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  • Method for modifying hydrophility of plasmons at surface of fluorine and silicon hard corneal contact lens
  • Method for modifying hydrophility of plasmons at surface of fluorine and silicon hard corneal contact lens
  • Method for modifying hydrophility of plasmons at surface of fluorine and silicon hard corneal contact lens

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] §1, including the following steps: (1) flush the plasma processing system several times with Ar gas; (2) put the fluorosilicon contact lens into the system, and start vacuuming; (3) after the system vacuum reaches below 5Pa, pass Gas flow controller into the atmosphere, such as Ar, O 2 or N 2 , to increase the system pressure to the required pressure and stabilize it for a period of time; (4) set the required plasma treatment power; (5) set the required plasma treatment time; (6) turn on the plasma discharge power supply, and carry out surface After the processing is completed, close the intake valve, and then vacuum for a period of time.

[0031] §2. The process parameters of the plasma treatment system are as follows:

[0032] Handling Atmosphere: Ar

[0033] Plasma frequency: 40kHz

[0034] Power size: 100W

[0035] Processing time: 120s

[0036] Atmospheric pressure: 30Pa.

Embodiment 2

[0038] Concrete processing step is identical with embodiment 1 (§1), and the technological parameter of present embodiment plasma processing system is as follows:

[0039] Process atmosphere: O2

[0040] Plasma frequency: 40kHz

[0041] Power size: 100W

[0042] Processing time: 120s

[0043] Atmospheric pressure: 30Pa.

Embodiment 3

[0045] Concrete processing step is identical with embodiment 1 (§1), and the technological parameter of present embodiment plasma treatment system is as follows:

[0046] Process atmosphere: N2

[0047] Plasma frequency: 40kHz

[0048] Power size: 100W

[0049] Processing time: 120s

[0050] Atmospheric pressure: 30Pa.

[0051] Measure the contact angle of the surface hydrophilic fluorosilicon contact lens surface that each above-mentioned implementation example makes as shown in Table 1:

[0052] Table I

[0053]

Example 1

Example 2

Example 3

untreated sample

Surface contact angle (°)

32

41

40

107

[0054] Through Table 1 and the attached figure 1 and attached figure 2It can be clearly found that the contact angle of the surface of the fluorosilicon hard contact lens treated by the process of the present invention is obviously improved.

[0055] From attached image 3 And attached Figure 4 The Si2p XPS tes...

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Abstract

The invention discloses a method for modifying hydrophility of plasmons at the surface of fluorine and silicon hard corneal contact lens, which mainly comprises the following steps: processing the surface of the contact lens with low-temperature plasmons, thus improving hydrophility of the contact lens; the hydrophilic modification at the surface of the contact lens is conducive to reducing deposition of protein and lipid at the surface of the contact lens, improving wearing comfort and lengthening wearing time of the contact lens.The adopted gas is non-reactive inert gases such as O2, Ar and N2 and the like; plasma frequency is 40kHz, power is 50-150W, processing time is 30-150s.The change of the chemical state of silicon at the surface of the hard corneal contact lens is the main reason behind improvement of hydrophility.The method for modifying the surface of the hard corneal contact lens features simple process and equipment, no need of other chemical reagents, energy conversation and environmental protection, thus enjoying good application prospect and scientific significance.

Description

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Claims

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Application Information

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Owner SCHOOL OF OPHTHALMOLOGY & OPTOMETRY WENZHOU MEDICAL COLLEGE
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