Electroretinography Center - Noblesville, IN
Noblesville Eye Doctor Doctors for ElectroretinographyType of Physician: Eye Doctor What is a Eye Doctor? A certification by the Board of Ophthalmology; practitioners provide comprehensive eye and vision care. They are trained to diagnose, monitor and medically or surgically treat all eyelid and orbital problems affecting the eye and visual pathways, and to diagnose, monitor and treat all eye and visual disorders. They often prescribe vision services (glasses and contact lenses) as well as serve as a consultant to physicians and other professionals. Specialty: Ophthalmology Common Name: Eye Doctor Eye Doctor Doctors in Noblesville * Vision Center  Lakeview Eye Physicians  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Community Eye Care  Community Eye Care  Comprehensive Eye Care  Klapper Eyelid & Facial Plastic Surgery  Abrams Eyecare Associates  Abrams Eyecare Associates  Abrams Eyecare Associates  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Howard Brumbaugh MD  Hua Gao MD  Whitson Vision PC  Whitson Vision PC  Eye Associates LLC  Eye Associates LLC  Retina Institute  David V Poer MD  Corneal Consultants of Indiana  Associated Vitreoretinal & Uveitis Consultants  Associated Vitreoretinal & Uveitis Consultants  Adam W Brazus MD  20/20 Eye Physicians of Indiana PC  20/20 Eye Physicians of Indiana PC  20/20 Eye Physicians of Indiana PC  Elliott A Yolles MD  Center for Sight  Center for Sight  Linda Fundenberger MD  Uma D Chaluvadi MD  Washington Eye Center  Washington Eye Center  Community Eye Care  Community Eye Care  Gerald T Keener Jr. MD  Eye Specialists of Indiana  20/20 Eye Physicians of Indiana PC  I U Eye Care  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  David A Plager MD  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Hoosier Ophthalmology Associates  Hoosier Ophthalmology Associates  Howard M Alig MD  Anderson Center For Sight PC  Anderson Center For Sight PC  Donald M Perez MD LLC  Donald M Perez MD LLC  Stephen J Massicotte MD PC  Thierry H Wilbrandt MD  Southside Eye Associates  Eye Physicians  Eye Physicians  Indiana Eye Clinic  Indiana Eye Clinic  Indiana Eye Clinic  Indiana Eye Clinic  Daniel R Whipple MD  Daniel R Whipple MD  Paul R Honan MD  Drs Goodell & Zauel  Drs Goodell & Zauel  Thomas E Strayer MD  Muncie Eye Center  Muncie Eye Center  Ajit K Tiwari MD  Vasilis Makris MD  Eye Care Center of Logansport  Parkside Opthamology  Columbus Eye Center  Columbus Eye Center  Max A Henry MD Noblesville, IndianaUpcoming Local Events2012-06-17
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ElectroretinographyRead the Electroretinography article » What is electroretinography?Electroretinography (ERG) is an eye test used to detect abnormal function of the retina (the light-detecting portion of the eye). Specifically, in this test, the light-sensitive cells of the eye, the rods and cones, and their connecting ganglion cells in the retina are examined. During the test, an electrode is placed on the cornea (at the front of the eye) to measure the electrical responses to light of the cells that sense light in the retina at the back of the eye. These cells are called the rods and cones. How is an ERG done?The patient assumes a comfortable position (lying down or sitting up). Usually the patient's eyes are dilated beforehand with standard dilating eye drops. Anesthetic drops are then placed in the eyes, causing them to become numb. The eyelids are then propped open with a speculum, and an electrode is gently placed on each eye with a device very similar to a contact lens. An additional electrode is placed on the skin to provide a ground for the very faint electrical signals produced by the retina. During an ERG recording session, the patient watches a standardized light stimulus, and the resulting signal is interpreted in terms of its amplitude (voltage) and time course. This test can even be performed in cooperative children, as well as sedated or anesthetized infants. The visual stimuli include flashes, called a flash ERG, and reversing checkerboard patterns, known as a pattern ERG.
What do the electrodes do?The electrodes measure the electrical activity of the retina in response to light. The information that comes from each electrode is transmitted to a monitor where it is displayed as two types of waves, labeled the A waves and B waves.
How are eletroretinography readings made?Readings during eletroretinography are usually taken first in normal room light. The lights... Recommended Reading Related to ElectroretinographyWhat is Usher syndrome?Usher syndrome is the most common condition that affects both hearing and vision. A syndrome is a disease or disorder that has more than one feature or symptom. The major symptoms of Usher syndrome are hearing loss and an eye disorder called retinitis pigmentosa, or RP. RP causes night-blindness and a loss of peripheral vision (side vision) through the progressive degeneration of the retina. The retina is a light-sensitive tissue at the back of the eye and is crucial for vision. As RP progresses, the field of vision narrows - a condition known as "tunnel vision" - until only central vision (the ability to see straight ahead) remains. Many people with Usher syndrome also have severe balance problems. There are three clinical types of Usher syndrome:
In the United States, types 1 and 2 are the most common types. Together, they... Other Related Electroretinography ArticlesEmergency Contact for Noblesville
Nearby Noblesville Hospitals *Riverview Hospital St Vincent Carmel Hospital Clarian North Medical Center The Indiana Heart Hospital Community Hospital North St Vincent Heart Center of Indiana St Vincent Pediatric Rehabilitation Center St Vincent Children's Hospital St Vincent Indianapolis Hospital St Vincent Seton Specialty Hospital St Vincent Women's Hospital Tipton Hospital Indiana Orthopaedic Hospital Community Hospital Anderson Saint John's Health System Community Hospital East St Vincent Mercy Hospital Westview Hospital Clarian Health Methodist Hospital Larue D Carter Memorial Hospital Wishard Health Services Clarian Health IU Medical Center Riley Hospital for Children Kindred Hospital Indianapolis Rehabilitation Hospital of Indiana Richard L Roudebush VA Medical Center Hancock Regional Hospital Select Specialty Hospital Beech Grove St Francis Hospital Beech Grove Witham Memorial Hospital Community Hospital South St Francis Hospital Indianapolis Clarian West Medical Center Howard Regional Health System Main Campus Select Specialty Hospital Indianapolis Valle Vista Health System St Vincent Frankfort Hospital Kindred Hospital Indianapolis South St Joseph Hospital Kokomo Howard Regional Health System West Campus Hendricks Regional Health Ball Memorial Hospital Henry County Memorial Hospital Featured Articles*Provider Directory Terms of Use: The WebMD 'Provider Directory' is provided by WebMD for use by the general public as a quick reference of information about Providers. The Provider Directory is not intended as a tool for verifying the credentials, qualifications, or abilities of any Provider contained therein. Inclusion in the Provider Directory does not imply recommendation or endorsement nor does omission in the Provider Directory imply WebMD disapproval. |
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Usher Syndrome
- There are three types of Usher (Usher's) syndrome, the most common condition that affects both vision and hearing. The major symptoms of Usher syndrome include retinitis pigmentosa (night-blindness and a loss of peripheral vision), and hearing loss. Usher syndrome is a genetic condition. There is no cure for Usher syndrome.
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