Electroretinography Center - Lafayette, LA
Lafayette 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 Lafayette * Azar Eye Clinic  Azar Eye Clinic  John M Azar MD  Robert I Blem MD  Azar Eye Clinic  Richard Bourgeois MD  Kirk S LeBlanc MD  Harold W Ledoux MD  Frank J Culotta Jr. MD & Scott T Gauthreaux  Frank J Culotta Jr. MD & Scott T Gauthreaux  Bohn & Joseph Eye Center  Bohn & Joseph Eye Center  Richard J Piccione MD  Advanced Eye Institute  LaHaye Total Eye Care  Casanova Eye Center  Casanova Eye Surgery  Edward E Graul MD  Eye Care Surgical Associates  Oliver Eye Clinic  Oliver Eye Clinic  Oliver Eye Clinic  Louisiana Eye Center  Gregory Hoffpauir MD  Russell J Saloom MD  Pediatric Eye Care Center  Pediatric Eye Care Center  Eye Medical Center  Retina & Vitreous of LA  Eye Specialists of Louisiana  Eye Medical Center  Eye Medical Center  Eye Medical Center  Eye Medical Center  The Retina Center  Retina & Vitreous of LA  Eye Medical Center  Eye Medical Center  Hoth Eye Clinic  Eye Specialists of Louisiana  Eye Medical Center  Children's Eye Center  Eye Medical Center  Eye Specialists of Louisiana  Eye Medical Center  Stephen M Breaud MD  Stephen M Breaud MD  Stephen M Breaud MD  Ochsner Clinic Baton Rouge Division of Ophthalmology  Ochsner Clinic Baton Rouge Division of Ophthalmology  Ochsner Clinic Baton Rouge Division of Ophthalmology  Williamson Eye Center  Williamson Eye Center  Williamson Eye Center  Williamson Eye Center  The Eye Institute  Eye Care Center  Eye Care Center  Eye Care Center  Eye Care Center  Eye Care Center  Eye Care Center  Wallace Robinson Eye Care  Wallace Eye Center  Alexander Eye & Laser Center  Alexander Eye & Laser Center  Alexander Eye & Laser Center  Alexander Eye & Laser Center  James Ralston MD  The Eye Clinic  The Eye Clinic  The Eye Clinic  The Eye Clinic  The Eye Clinic  The Eye Clinic  The Eye Clinic  The Eye Clinic  The Eye Clinic  Falgoust Eye Medical & Surgical  Hart Eye Center  Advanced Eye Institute  Advanced Eye Institute  The Eye Clinic  The Eye Clinic  Kellum Eye Center  SEECA Medical  Kufoy Medical Clinic  J Bruce Steigner MD  Van M Ardoin MD Lafayette, LouisianaUpcoming Local Events2012-05-26
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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 Lafayette
Nearby Lafayette Hospitals *Our Lady of Lourdes Regional Medical Center Park Place Surgery Hospital Lafayette General Medical Center Louisiana Extended Care Hospital Lafayette University Medical Center Lafayette Community Specialty Hospital Lafayette Meadowbrook Specialty Hospital Heart Hospital of Lafayette Lafayette Surgical Specialty Hospital Acadia Vermilion Hospital Southwest Medical Center LTAC of Acadiana Southpark Community Hospital Womens & Children's Hospital St Martin Hospital Acadia St Landry Hospital Doctors Hospital of Opelousas American Legion Hospital Dauterive Hospital Crowley Rehabilitation Hospital Iberia Medical Center Abrom Kaplan Memorial Hospital Opelousas General Health System St Landry Extended Care Hospital Acadian Medical Center Abbeville General 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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Usher Syndrome
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