Electroretinography Center - Azusa, CA
Azusa 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 Azusa * Foothill Eye Surgical Center  Kurwa Eye Center  California Eye Specialists  California Eye Specialists  California Eye Specialists  California Eye Specialists  York Laser Eye Medical  Dualan & Frey MDs  Atlantis Eye Care  Atlantis Eye Care  Magan Medical Clinic  Jose C Briones Jr. MD  Ocular Surgery Medical Associates  Ocular Surgery Medical Associates  Glen Jarus MD  Peter T Chen MD  NuVision Laser  I Q Laser Vision  Susie Y Wong  Randolph J Falk MD  OIC Eye Group  Phillips Eye Center  El Monte Eye Clinic  Phillips Eye Center  Arcadia Eye Center  Doheny Eye Center Arcadia  Garlan Lo MD  Doheny Eye Center Arcadia  Doheny Eye Center Arcadia  Wayne Martin MD  Dennis Chuck MD  California Laser Eye Associates  Mark H Barak MD  Dai Le Tran MD  Nazareth E Darakjian MD  Roger Chan MD  Jan S Lukac MD  Retina Eye Specialists  Frederick Raymond MD  Claremont Eye Associates  Claremont Eye Associates  Claremont Eye Associates  Southern California Eye Care  Nicholas Kokoris MD & Associates  Nicholas Kokoris MD & Associates  San Gabriel Eye Associates  San Gabriel Eye Associates  William Ko MD  David Marshburn DO  John S Marshburn MD  William N May MD  Quon Medical Center  Almira Cann MD  Chang Eye Clinic  Montebello Eye Center  Montebello Eye Center  Dik Cheung MD  Vision Care Network  Michael J Miller MD  Karen Morgan MD  Warren C Stout MD  Warren C Stout MD  Ted Wei MD  Kevin T Wong MD  Kevin T Wong MD  Lo Medical Group  Mitchell Latter MD Inc  Grace Liu MD  Agape Eye Associates  Retina Consultants of Orange County  Sam Goldberger MD  Retina Consultants of Orange County  Lingua Vision Surgical Group  John D Zdral MD John Esser MD  Southern California Glaucoma Consultants  Ophthalmology Corporation  Calvin T Eng MD  Paul T Urrea MD  Pasadena Eye Medical Group  Eyesthetica  Jeffrey C Hong MD  Vitreo-Retinal Associates  Vitreo-Retinal Associates  Marta L Mora MD  Pasadena Eye Medical Group  Thomas Smith MD  Pasadena Eye Medical Group  Pasadena Eye Medical Group  Robert A Innocenzi MD  J Nickolas Berbos MD  Fullerton Eye Medical Center  William Mosier MD  De La Pena Eye Clinic  Jeffrey V Winston MD  Jeffrey V Winston MD  Sally I Kim MD  Childrens Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute Azusa, CaliforniaUpcoming Local Events2012-06-10
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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 a visual field test?A visual field test is a method of measuring an individual's entire scope of vision, that is their central and peripheral (side) vision. Visual field testing actually maps the visual fields of each eye individually. The visual field test is a subjective examination, requiring the patient to understand the testing instructions, fully cooperate, and complete the entire test in order to provide useful information. What is a visual field test used for?Visual field testing is most frequently used to detect any signs of glaucoma damage to the optic nerve. In addition, visual field tests are useful for detection of central or peripheral retinal disease, eyelid conditions such as ptosis or drooping, optic nerve disease, and diseases affecting the visual pathways within the brain. The visual pathways carry information from the eye to the visual or occipital cortex in the brain, where this information is proces... Other Related Electroretinography ArticlesEmergency Contact for Azusa
Nearby Azusa Hospitals *Foothill Presbyterian Hospital East Valley Hospital Medical Center Citrus Valley Medical Center Inter Community Campus Aurora Charter Oak Hospital Kindred Hospital San Gabriel Valley City of Hope National Medical Center San Dimas Community Hospital Doctor's Hospital West Covina Citrus Valley Medical Center Queen of the Valley Campus Vista Specialty Hospital of San Gabriel Valley Kaiser Permanente Medical Center Baldwin Park Methodist Hospital Casa Colina Centers for Rehabilitation Pomona Valley Hospital Medical Center Greater El Monte Community Hospital BHC Alhambra Hospital Aurora Las Encinas Hospital San Gabriel Valley Medical Center City of Angels Medical Center Ingleside Campus Montclair Hospital Medical Center Garfield Medical Center Beverly Hospital Kindred Hospital Brea Whittier Hospital Medical Center Alhambra Hospital Medical Center Huntington Hospital Presbyterian Intercommunity Hospital Monterey Park Hospital Chino Valley Medical Center San Antonio Community Hospital Kindred Hospital Ontario Kindred Hospital La Mirada St Jude Medical Center Metropolitan State Hospital Placentia-Linda Hospital East Los Angeles Doctors Hospital USC University Hospital USC Norris Comprehensive Cancer Center Los Angeles Community Hospital Norwalk Community Hospital LAC + USC Medical Center LAC + USC Medical Center Women's & Children's Hospital Verdugo Hills Hospital Glendale Adventist Medical Center Promise Hospital of East Los Angeles White Memorial Medical Center Coast Plaza Doctors Hospital Downey Regional Medical Center Rancho Specialty Hospital Kaiser Permanente Downey Medical Center Pacific Alliance Medical Center Anaheim Regional Medical Center Kaiser Mental Health Center Barlow Respiratory Hospital Kaiser Permanente Anaheim Medical Center Glendale Memorial Hospital & Health Center Gateways Hospital & Mental Health Center Rancho Los Amigos National Rehabilitation Center College Hospital Cerritos Community Hospital of Huntington Park La Palma Intercommunity Hospital Good Samaritan Hospital California Hospital Medical Center St Vincent Medical Center Western Medical Center Anaheim West Anaheim Medical Center Bellflower Medical Center Temple Community Hospital St Francis Medical Center Childrens Hospital Los Angeles Hollywood Presbyterian Medical Center Orthopaedic Medical Center Shriners Hospitals for Children Los Angeles Kaiser Permanente Los Angeles Medical Center Anaheim 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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