Navigation Links
Self-moisturizing contact lenses, naturally
Date:7/8/2008

Even contact lenses are joining the trend to go green.

Chemical engineering researchers at McMaster University have shown that a common fluid found in our bodies can be used as a natural moisturizing agent in contact lenses.

This is a step up from the current wave of self-moisturizing contact lenses that use synthetic materials as a wetting agent to prevent eye dryness and increase wearer comfort.

It is estimated that more than 50 per cent of people who stop wearing contact lenses do so because of discomfort caused by dryness, which is particularly high at the end of the day.

The research from McMaster, recently published in the journal Biomaterials, showed that hyaluronic acid can be entrapped in existing contact lens material without affecting optical properties.

It was also found that using hyaluronic acid considerably reduces the build up of proteins which can cloudy contact lens material, the cause of up to 30 per cent of all after-care visits by contact lens wearers to optometrists. [That's one less appointment and one more step towards reducing your carbon footprint.]

Hyaluronic acid is a natural polymer that acts to reduce friction. An average person weighing 70-kg has about 15 grams of hyaluronic acid in their body, one third of which is turned over daily. The body uses hyaluronic acid to repair skin, provide resiliency in cartilage, and contribute to the growth and movement of cells, among other things. It is also used by the medical profession to treat patients with dry eyes, in cataract surgery, and for other eye-related procedures.

While manufacturers have not yet produced contact lenses with hyaluronic acid, the researchers remain hopeful.

"We've shown that the process works," said Heather Sheardown, professor of chemical engineering at McMaster and a member of the McMaster School of Biomedical Engineering, who was involved in the research. "We're optimistic that a manufacturer will see the benefits of using this naturally based technology to provide contact lens wearers with greater comfort and convenience."


'/>"/>

Contact: Gene Nakonechny
genen@mcmaster.ca
905-525-9140 x26781
McMaster University
Source:Eurekalert

Related biology news :

1. Its all about geometry: Protein contact surfaces hold key to cures
2. Naturally-occurring apple compounds reduce risk of pancreatic cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/22/2017)...   Neurotechnology , a provider of high-precision ... the release of the SentiVeillance 6.0 ... recognition using up to 10 surveillance, security and ... new version uses deep neural-network-based facial detection and ... a Graphing Processing Unit (GPU) for enhanced speed. ...
(Date:3/20/2017)... , March 20, 2017 At this year,s ... -based biometrics manufacturer DERMALOG. The Chancellor came to the DERMALOG stand ... is this year,s CeBIT partner country. At the largest German biometrics ... in use: fingerprint, face and iris recognition as well as DERMALOG´s multi-biometrics ... ...
(Date:3/13/2017)... of security: Biometric Face Matching software  Continue Reading ... ... match face pictures against each other or against large databases. The recognition of ... ... for biometric Face Matching on the market. The speed is at 100 million ...
Breaking Biology News(10 mins):
(Date:4/27/2017)... a distinguished resource for research, development and commercialization of ... Thomas C. Seoh as President and CEO. Mr. Seoh ... becomes Executive Chairman and will continue to serve as ... Thomas Seoh commented, "I am excited and honored ... firm,s remarkable team of life science professionals, all of ...
(Date:4/26/2017)... ... April 26, 2017 , ... Baltimore bio ... MailGuardtm mail security screening solution at the National Postal Forum 2017 in Baltimore, ... a fast, highly accurate, easy to use and low cost threat detection solution ...
(Date:4/25/2017)... ... 25, 2017 , ... Franz Inc ., an early ... and market leader for Semantic Graph Database technology, today announced ... most effective system for developing and deploying applications to solve the challenges developers ...
(Date:4/25/2017)... ... April 25, 2017 , ... Leaders of Quorum Review IRB ... featured in multiple sessions at this week’s Association of Clinical Research Professionals (ACRP) ... practices in clinical research. , "We are excited to present subject matter expertise on ...
Breaking Biology Technology: