New surgical implant restores some vision in patients with age-related macular degeneration

September 13, 2012

(Medical Xpress)—Surgeons at UC Davis Medical Center have successfully implanted a new telescope implant in the eye of a patient with end-stage age-related macular degeneration (AMD), the most advanced form of the disease and a leading cause of blindness in older Americans.

The device, approved by the in 2010, is the only medical/surgical option available that restores a portion of vision lost to the disease. UC Davis Health System's Eye Center, in collaboration with the Society for the Blind, is one of the few in California and the nation to offer the innovative procedure.

"Macular degeneration damages the retina and causes a blind spot in a person's central field of vision. The telescopic implant restores vision by projecting images onto an undamaged portion of the retina, which makes it possible for patients to again see people's faces and the details of objects located directly in front of them," said Mark Mannis, professor and chair of ophthalmology and vision sciences and director of the Eye Center at UC Davis Health System.

The exact cause of dry macular degeneration is unknown, but the condition develops as the eye ages. The macula is made up of millions of light-sensing cells that provide sharp, detailed central vision. It is the most sensitive part of the retina, which is located at the back of the eye. The retina quickly turns light into electrical signals and then sends these electrical signals to the brain through the . The brain translates the into images. If the macula is damaged, fine points in these images are not clear.

In May, UC Davis cornea specialists Mannis and Jennifer Li implanted the miniature telescope, which is smaller than a pea, in the left eye of 89-year-old Pollock Pines resident Virginia Bane, an artist who stopped painting four years ago when macular degeneration took away her . Bane is the first in Northern California and among the first 50 individuals in the nation to receive the implant.

"I can see better than ever now," Bane said. "Colors are more vibrant, beautiful and natural, and I can read large print with my glasses. I haven't been able to read for the past seven years. I look forward to being able to paint again."

Since her surgery, Bane has been working with Society for the Blind optometrists and UC Davis occupational therapists to learn how to use her new telescopic eye.

"Virginia's vision will keep getting better and better over time as she retrains her brain how to see. She basically uses her left eye with the telescopic implant to see details, such as using a microwave keypad and reading a book," said Richard Van Buskirk, an optometrist with the Society for the Blind in Sacramento who specializes in treating patients with low vision. "Her untreated right eye provides peripheral vision, which helps with mobility, such as walking or navigating within her home. Ultimately, her brain will automatically make the shift, using the capability of each eye as needed."

UC Davis retina specialists who treat macular degeneration and other back-of-the-eye disorders coordinate the treatment program with optometrists who specialize in caring for patients with low vision. Patients undergo medical, visual and functional evaluations to determine whether they are good candidates for the procedure. A unique aspect of the evaluation is the ability to simulate, prior to surgery, what a person may expect to see once the telescope is implanted. The simulator helps patients determine if the improvement meets their expectations.

Candidates for the procedure include individuals with untreatable end-stage, (dry form) who are 75 or older and whose disease is stable but severely impairs vision. Candidates must have adequate peripheral in the that will not receive the implant and have no other ocular diseases, such as glaucoma.

Explore further: UCI surgeons implant tiny eye telescope in patients with macular degeneration

More information: Patients and physicians can find more information about the telescope implant and treatment program at UC Davis Health System Eye Center (916-734-6074), the Society for the Blind (916-452-8271) or CentraSight (877-99SIGHT).

Related Stories

UCI surgeons implant tiny eye telescope in patients with macular degeneration

June 26, 2012
(Medical Xpress) -- Two UC Irvine ophthalmologists are the first in Orange County to implant a miniature telescope in the eyes of patients with end-stage age-related macular degeneration, the leading cause of blindness among ...

Vision loss slowed by encapsulated cell therapy

April 7, 2011
(PhysOrg.com) -- A phase 2 clinical trial for the treatment of a severe form of age-related macular degeneration called geographic atrophy (GA) has become the first study to show the benefit of a therapy to slow the progression ...

Recommended for you

Researchers report startling glaucoma protein discovery

October 20, 2017
A discovery in a protein associated with glaucoma was so unheard of that for over two years, researchers ran it through a gauntlet of lab tests and published a new research paper on it. The tests validated what they initially ...

Curve-eye-ture: How to grow artificial corneas

October 19, 2017
Scientists at Newcastle University, UK, and the University of California have developed a new method to grow curved human corneas improving the quality and transparency - solely by controlling the behaviour of cells in a ...

Clinical study success for novel contact lens device aimed to improve glaucoma treatment

October 19, 2017
A novel contact lens device developed by University of Liverpool engineers to improve the treatment of glaucoma has been found to reliably track pressure changes in the eye and be wearable by people who took part in its first ...

Study indicates proof of concept for using a surrogate liquid biopsy to provide genetic profile of retinoblastoma tumors

October 12, 2017
Retinoblastoma is a tumor of the retina that generally affects children under 5 years of age. If not diagnosed early, retinoblastoma may result in loss of one or both eyes and can be fatal. Unlike most cancers that are diagnosed ...

Farsighted children struggle with attention, study finds

October 10, 2017
Farsighted preschoolers and kindergartners have a harder time paying attention and that could put them at risk of slipping behind in school, a new study suggests.

New drug reduces rate of progression of incurable eye disease

October 4, 2017
An international study including researchers from the Centre for Eye Research Australia (CERA) has found a way to slow the progression of dry age-related macular degeneration (AMD) - one of the most common causes of vision ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.