HOME >> MEDICINE >> NEWS
Lens replacement material holds prospect of 'young' eyes for people over 40

NEW YORK, Sept. 8 A gel-like material being developed by scientists at the VA Hospital and Washington University in St. Louis could eventually mean the end of bifocals and contacts for millions of middle age and older people who suffer from presbyopia literally "old vision." The material, which could be used to replace old hardened lenses in patients, including those with cataracts, was described today at the 226th national meeting of the American Chemical Society, the world's largest scientific society.

While not a life-threatening condition, presbyopia affects nearly everyone over the age of about 40 or 45. As people age, according to one theory, the lenses in their eyes slowly harden making it more and more difficult to focus on nearby objects. The current solution for most people is reading glasses or contacts. Even people who undergo corrective laser surgery often still need glasses for reading and up close focusing.

"Our idea is that if we can remove the lens and put in a material that is soft, like a young healthy lens is at age 20, then they would have their accommodative ability restored," says researcher Madalene Fetsch. "They would be able to focus on near and far objects."

Fetsch, a graduate assistant in Washington University's department of biomedical engineering, is working under the mentorship of Dr. Nathan Ravi, M.D., Ph.D., principal investigator in the development of the replacement lens material. He is an associate professor of ophthalmology and professor of chemical engineering at the school. He also is director of ophthalmology for VA Heartland hospitals in the Midwest.

The material, which is currently in lab testing, is a hydrophobically modified hydrogel. Hydrogels are used in many extended wear contact lenses.

"The gels can be made soft to the touch and have viscoelastic properties similar to that of the natural human lens," according to Fetsch. "At the same time, our material so far looks l
'"/>


8-Sep-2003


Page: 1 2 3

Related medicine news :

1. Growing your own replacement teeth? Not science fiction!
2. Premature infants with lung disease may continue to need replacement substance to ease breathing
3. Biotech breakthrough in islet cell replacement for type 1 diabetes
4. MDCT is better than plain film in diagnosing hip replacement complications
5. Testosterone replacement improves muscle strength, function in HIV-infected women
6. Disc replacement in neck relieves pain, restores mobility
7. Minors able to buy nicotine replacement therapy products
8. Study finds no causal link between testosterone replacement, prostate cancer or cardiac disease
9. Study: growth hormone-deficient young adults need larger replacement doses than older adults
10. Study of hip replacement patients finds 80 percent eligible for minimally invasive surgery
11. Substantial increase in breast cancer risk from combination hormone replacement therapy

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/28/2020)... ... 27, 2020 , ... To help prevent the spread of ... an alternative approach to seeing their patients. This approach will allow patients to ... own home or office using video conference and telecommunications technology, such as a ...
(Date:3/28/2020)... ... March 28, 2020 , ... Confluent Health is proud to ... rehabilitation company since 1985 specializing in the treatment of orthopedic, sports, and work-related ... than 30 years ago, we have been committed to providing excellent quality of ...
(Date:3/27/2020)... ... 2020 , ... NeoTract, a wholly owned subsidiary of Teleflex ... announced that Harpreet Wadhwa, M.D., East Valley Urology Center in Mesa, AZ has ... Wadhwa has achieved a high level of training and experience with the UroLift® ...
(Date:3/22/2020)... (PRWEB) , ... March 21, 2020 , ... In partnership ... Unity” to honor our community’s medical professionals and first responders. The title comes from ... seal of the city and its flag. , Proceeds from the sale of ...
(Date:3/22/2020)... ... March 22, 2020 , ... In times of crisis, ... a frivolous luxury. The world’s focus is on practical matters - on self-isolation, ... stability and control in chaos. However, it’s during these times that “self-awareness” is ...
Breaking Medicine News(10 mins):
(Date:3/30/2020)... N.C. (PRWEB) , ... March 30, 2020 , ... ... today announced it has been recognized by Dresner Advisory Services as the #2 ... for its capabilities related to data orchestration, data transformation, and data integration for ...
(Date:3/30/2020)... ... March 30, 2020 , ... ... is now offering 'Ask A Technician' service. , "We are very excited to ... added, "A certified technician at the Institute of Tattoo Removal is available to ...
(Date:3/28/2020)... ... 27, 2020 , ... Known for bridging the gap between wellness and beauty ... hand sanitizer in response to the COVID-19 outbreak. , As hand washing and arm ... during the next several months even in the absence of the COVID-19 virus. However, this ...
Breaking Medicine Technology:
Cached News: