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:1/6/2017)... , Jan. 5, 2017  Delta ID Inc., a ... scanning technology for automotive at CES® 2017. Delta ID ... ) to demonstrate the use of iris scanning as ... authenticate the driver in a car, and as a ... driving experience. Delta ID and Gentex will ...
(Date:12/22/2016)... -- As part of its longstanding mission to improve genetic literacy ... released its latest children,s book, titled The One ... topics of inheritance and variation of traits that are part ... school classrooms in the US. The book ... Killoran , whose previous book with 23andMe, You ...
(Date:12/19/2016)... BARCELONA , España y TORONTO , 19 ... fusión con Northern Biologics Inc. que permitirá el desarrollo acelerado de ... ensayos clínicos en varios tipos de tumor en 2017, con múltiples ... ... de su clase con objetivo en el factor inhibidor de leucemia ...
Breaking Biology News(10 mins):
(Date:1/19/2017)... CA (PRWEB) , ... January 19, 2017 , ... ... delivery of product vigilance software to leading biopharmaceutical and medical device manufacturers and ... is a fully 21 CFR Part 11-compliant email client designed to provide product ...
(Date:1/19/2017)... , Jan. 19, 2017  ArmaGen, Inc., ... Schmidt , Ph.D., as chief executive officer, as ... directors. Dr. Schmidt brings to ArmaGen more than 17 ... research and development of biotherapeutics and pharmaceuticals. ... with the diverse experience and skillset necessary to ...
(Date:1/19/2017)... ... January 18, 2017 , ... ... of Health (NIH) to update its Data Sharing Policy. Specifically, the nation’s leading ... grant applications subject to the existing policy. AMIA recommended that NIH earmark funding ...
(Date:1/19/2017)... ... January 19, 2017 , ... FireflySci Inc. is a go-getter type ... tremendous growth is accounted to two main factors. The first is the amazing ... of vendors supplying FireflySci products all around the world. , 2016 was a tremendous ...
Breaking Biology Technology: