Electroretinography Center - Palmdale, CA
Palmdale 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 Palmdale * Ira E Opatowsky MD  Retina Vitreous Consultants  Sheila L Wright-Scott MD  Pacific Eye Medical Group  Southern California Glaucoma Consultants  Pacific Eye Medical Group  Rulon D Beesley MD  Facey Medical Group Canyon Country  Thomas Smith MD  Beeve Vision Care Center  Beeve Vision Care Center  Jeffrey Nilles MD  Jeffrey Nilles MD  Verdugo Eye Care  Vision Care Medical Group  Vision Care Medical Group  Nazareth E Darakjian MD  Glendale Eye Medical Group  Foothill Eye Surgical Center  Warren C Stout MD  Warren C Stout MD  Almira Cann MD  Michael J Miller MD  Karen Morgan MD  California Eye Specialists  California Eye Specialists  California Eye Specialists  Alice Song MD Corp  Children's Retina Institute  Pasadena Eye Medical Group  NuVision Laser  Marta L Mora MD  Pasadena Eye Medical Group  Ophthalmology Corporation  Pasadena Eye Medical Group  Pasadena Eye Medical Group  Jose C Briones Jr. MD  Glendale Eye Medical Group  Glendale Eye Medical Group  Glendale Eye Medical Group  Eyesthetica  Glendale Eye Medical Group  Jeffrey C Hong MD  Glendale Eye Medical Group  Glendale Eye Medical Group  Specialty Eye Care Medical Center Inc  Vitreo-Retinal Associates  Vitreo-Retinal Associates  Phillips Eye Center  Kurwa Eye Center  Phillips Eye Center  Carl S Shibata MD  North Valley Eye Medical Group  North Valley Eye Medical Group  Retina Eye Specialists  Ocular Surgery Medical Associates  Arcadia Eye Center  Doheny Eye Center Arcadia  Doheny Eye Center Arcadia  Ocular Surgery Medical Associates  Doheny Eye Center Arcadia  Armin Vishteh MD  Albert Baktanian MD  Facey Medical Foundation Mission Hills  Facey Medical Foundation Mission Hills  Facey Medical Foundation Mission Hills  Sahag A Baghdassarian MD  The Valencia Eye Institute  Sahag A Baghdassarian MD  Berg Feinfield Vision Correction  East Valley Eye Center  Berg Feinfield Vision Correction  East Valley Eye Center  Berg Feinfield Vision Correction  Berg Feinfield Vision Correction  Mitchell Latter MD Inc  Berg Feinfield Vision Correction  Santa Clarita Valley Eye Center  California Retina Consultants  William Ko MD  Panorama City Medical Center  San Gabriel Eye Associates  San Gabriel Eye Associates  Dik Cheung MD  Quon Medical Center  Brian R Gross MD  John J Mcgroarty MD Inc  John J Mcgroarty MD Inc  A Center for Vision Care  A Center for Vision Care  A Center for Vision Care  A Center for Vision Care  Chang Eye Clinic  Grace Liu MD  OIC Eye Group  DeLaPena Eye Clinic  Reingold Eye Center  Reingold Eye Center  California Eye Specialists  Reingold Eye Center Palmdale, CaliforniaUpcoming Local Events2012-05-28
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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 Palmdale
Nearby Palmdale Hospitals *Lancaster Community Hospital Antelope Valley Hospital Olive View UCLA Medical Center Verdugo Hills Hospital Henry Mayo Newhall Memorial Hospital Pacifica Hospital of the Valley Providence Holy Cross Medical Center Aurora Las Encinas Hospital Glendale Adventist Medical Center Huntington Hospital Kaiser Permanente Panorama City Medical Center Methodist Hospital Mission Community Hospital Providence Saint Joseph Medical Center City of Hope National Medical Center Glendale Memorial Hospital & Health Center San Gabriel Valley Medical Center Valley Presbyterian Hospital Hollywood Community Hospital of Van Nuys Foothill Presbyterian Hospital Alhambra Hospital Medical Center East Valley Hospital Medical Center Northridge Hospital Medical Center Childrens Hospital Los Angeles Sherman Oaks Hospital Kaiser Permanente Los Angeles Medical Center Hollywood Presbyterian Medical Center Gateways Hospital & Mental Health Center 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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