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:8/23/2017)... -- The general public,s help is being enlisted in what,s thought to be ... on the human body –and are believed to affect health.  ... The Microbiome Immunity Project is the largest study ... gut. The project's goal is to help advance scientific knowledge of the ... ...
(Date:6/14/2017)... IBM ) is introducing several innovative partner startups at VivaTech ... startups and global businesses, taking place in Paris ... will showcase the solutions they have built with IBM Watson ... France is one of the most dynamic ... in the number of startups created between 2012 and 2015*, ...
(Date:4/24/2017)... Janice Kephart , former 9/11 ... Partners, LLP (IdSP) , today issues the following ... March 6, 2017 Executive Order: Protecting the ... be instilled with greater confidence, enabling the reactivation ... applications are suspended by until at least July ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... For the second time ... US2020 STEM Mentoring Award. Representatives of the FirstHand program travelled to Washington, D.C. ... US2020. , US2020’s mission is to change the trajectory of STEM education in ...
(Date:10/10/2017)... ... October 10, 2017 , ... ... 13 prestigious awards honoring scientists who have made outstanding contributions to ... symposium during Pittcon 2018, the world’s leading conference and exposition for laboratory science, ...
(Date:10/9/2017)... Antonio, Texas (PRWEB) , ... ... ... new study published on October 5, 2017, in the medical journal, Epilepsia, ... equivalence with the gold standard, video EEG, in detecting generalized tonic-clonic seizures ...
(Date:10/6/2017)... , ... October 06, 2017 , ... ... a lunch discussion and webinar on INSIGhT, the first-ever adaptive clinical trial for ... Dana-Farber Cancer Institute. The event is free and open to the public, but ...
Breaking Biology Technology: