Featured Research

from universities, journals, and other organizations

Hopkins Offers Non-Laser Correction Farsightedness

Date:
October 1, 2002
Source:
Johns Hopkins Medical Institutions
Summary:
Surgeons at Johns Hopkins' Wilmer Eye Institute are now offering conductive keratoplasty, or CK, to correct low-level farsightedness in selected patients over age 40. The procedure, approved in April by the U.S. Food and Drug Administration, is the first non-laser treatment for hyperopia, a condition in which people can see objects far away but have trouble focusing on those nearby.

Surgeons at Johns Hopkins' Wilmer Eye Institute are now offering conductive keratoplasty, or CK, to correct low-level farsightedness in selected patients over age 40.

The procedure, approved in April by the U.S. Food and Drug Administration, is the first non-laser treatment for hyperopia, a condition in which people can see objects far away but have trouble focusing on those nearby. It is an outpatient surgery performed under local anesthesia in just a few minutes .

Unlike laser treatments, which use light waves as an energy source, CK uses radiofrequency waves, a form of electromagnetic energy, to re-shape the peripheral cornea. The energy is similar in some respects to the microwaves that power CB radios and cell phones.

CK employs a pen-shaped instrument with a tip as thin as a human hair that releases the radiofrequency energy. The tip is applied in a circular pattern on the outer layer of the front of the eyeball to shrink small areas of tissue. The result is a constrictive band of tissue, similar to a tightened belt, that increases the overall curvature of the cornea.

"Nearly 95 percent of patients with low to moderate ranges of farsightedness achieve normal or near-normal vision after the procedure," says Terrence P. O'Brien, M.D., medical director of the Wilmer Laser Vision Center in Lutherville, Md.

About 60 million Americans have some hyperopia, characterized by a shortened or too flat cornea. When light enters a hyperopic eyeball, it focuses behind the retina instead of directly on the retina, forcing the focusing apparatus of the eye to work to compensate and clarify fuzzy images.

Symptoms include eyestrain, blurred vision or headache, especially when reading or at the end of the day. The condition can be corrected with prescription contact lenses and eye glasses, or surgically treated by steepening the central cornea or flattening the peripheral cornea.

Radiofrequency technology, also used for prostate cancer therapy, back surgery and some cardiovascular procedures, is still in clinical trials for the treatment of nearsightedness and astigmatism.

For more information about CK, call the Wilmer Laser Vision Center at 410-583-2802 or check their Web site at http://www.wilmerlaser.net

Related Web site:

The Johns Hopkins Wilmer Eye Institute:http://www.wilmer.jhu.edu


Story Source:

The above story is based on materials provided by Johns Hopkins Medical Institutions. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins Medical Institutions. "Hopkins Offers Non-Laser Correction Farsightedness." ScienceDaily. ScienceDaily, 1 October 2002. <www.sciencedaily.com/releases/2002/09/020927070440.htm>.
Johns Hopkins Medical Institutions. (2002, October 1). Hopkins Offers Non-Laser Correction Farsightedness. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2002/09/020927070440.htm
Johns Hopkins Medical Institutions. "Hopkins Offers Non-Laser Correction Farsightedness." ScienceDaily. www.sciencedaily.com/releases/2002/09/020927070440.htm (accessed July 28, 2014).

Share This




More Health & Medicine News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

$15B Deal on Vets' Health Care Reached

$15B Deal on Vets' Health Care Reached

AP (July 28, 2014) A bipartisan deal to improve veterans health care would authorize at least $15 billion in emergency spending to fix a veterans program scandalized by long patient wait times and falsified records. (July 28) Video provided by AP
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
West Africa Gripped by Deadly Ebola Outbreak

West Africa Gripped by Deadly Ebola Outbreak

AFP (July 28, 2014) The worst-ever outbreak of the deadly Ebola epidemic grips west Africa, killing hundreds. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins