Electroretinography Center - Memphis, TN
Memphis 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 Memphis * UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  Philip M Furr MD  Hamilton Eye Clinic  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  Clifford W Sims MD  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  William C Hurd MD  Bruce W Herndon MD  Mid-South Retina Associates LLC  Mid-South Retina Associates LLC  David A Usdan MD  East Memphis Ophthalmic Associates  Carl E Flinn MD  Southern Eye Associates  Southern Eye Associates  Roger L Deshaies MD  The Meyer Eye Group PLC  VRF Eye Specialty Group  VRF Eye Specialty Group  VRF Eye Specialty Group  VRF Eye Specialty Group  VRF Eye Specialty Group  VRF Eye Specialty Group  Toyos Clinic  VRF Eye Specialty Group  Passons Eye Center PLLC  Passons Eye Center PLLC  Total Eye Care PA  Total Eye Care PA  Rice Eye Associates  Visionary Eye Care  James S Linder MD  Rice Eye Associates  Sidney H Kriger MD PC  Charles Retina Institute  Charles Retina Institute  Meca  Meca  Meca  Meca  Sidney H Kriger MD PC  Meca  Kathryn W Byrd MD  Eye Specialists Association PC  Fletcher Goode MD  UT Medical Group Ophthalmology  UT Medical Group Ophthalmology  Southern Tennessee Eye Specialists  Eye Clinic  Eye Clinic  Eye Clinic  Eye Clinic  Eye Clinic  Eye Clinic  Eye Clinic  The Jackson Clinic West Forest Campus  Mid-South Retina Associates LLC  Mid-South Retina Associates LLC Memphis, TennesseeMemphis is a city in the southwest corner of the U.S. state of Tennessee, and the county seat of Shelby County. The city is located on the 4th Chickasaw Bluff, south of the confluence of the Wolf and Mississippi rivers. Upcoming Local Events2012-06-03
2012-06-17
2012-06-17
2012-06-17
2012-06-17
2012-07-29
2012-11-03
2012-11-11
2012-11-11
2012-11-11
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 Memphis
Nearby Memphis Hospitals *St Jude Children's Research Hospital LeBonheur Children's Medical Center Regional Medical Center at Memphis Memphis Mental Health Institute Memphis VA Medical Center HEALTHSOUTH Rehabilitation Hospital Methodist University Hospital Crittenden Regional Hospital Methodist Healthcare South Hospital Delta Medical Center Methodist Healthcare North Hospital Baptist Memorial Hospital Memphis Baptist Memorial Restorative Care Hospital Baptist Memorial Hospital for Women Saint Francis Hospital Select Specialty Hospital Memphis Baptist Memorial Hospital Desoto Methodist LeBonheur Germantown Baptist Rehabilitation Hospital Germantown Saint Francis Hospital Bartlett Lakeside Behavioral Health System Parkwood Behavioral Health System Baptist Memorial Hospital Collierville Baptist Memorial Hospital Tipton 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. |
Suggested Reading on Electroretinography by Our Doctors
-
Related Diseases & Conditions
1 articles-
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.
-
Usher Syndrome
-
Medications
0 articles -
Procedures & Tests
1 articles -
Pictures, Images & Quizzes
0 articles -
Doctor's & Expert's Views
1 articles -
Health News
0 articles -
Health Features
0 articles
