Electroretinography Center - Placentia, CA
Placentia 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 Placentia * John S Marshburn MD  Vision Care Network  J Nickolas Berbos MD  Fullerton Eye Medical Center  William Mosier MD  Jan S Lukac MD  Chien Ko Wu & Meei Ling Wu MDs  Retina Consultants of Orange County  Sam Goldberger MD  Retina Consultants of Orange County  Lingua Vision Surgical Group  John D Zdral MD John Esser MD  George H Garcia MD Inc  George H Garcia MD Inc  Hyong S Choe MD  Arthur D Charap MD  John Kleinberg MD  UCI Medical Center Ophthalmology  Sheldon Nankin MD  Aisha Simjee MD  Retina Institute  David A Sami MD  Florencio C Ching MD  Charles E Keller MD  Felizardo S Camilon MD  Advanced Eye Center  Orange County Ophthalmology  Orange County Ophthalmology  Atlantis Eyecare  Orange County Retina Medical Group  Orange County Retina Medical Group  Orange County Retina Medical Group  David Sacks MD  Sierra Eye & Laser Institute  Paul A Brailsford MD  Pacific Eye Medical Group  Michael B Lappin MD  Pacific Eye Medical Group  Southern California Eye Care  Retina Associates of Orange County  I Q Laser Vision  Susie Y Wong  OIC Eye Group  Sally I Kim MD  Garlan Lo MD  Wayne Martin MD  Robert Everakes MD  Jeffrey V Winston MD  Nelson Noguchi MD  Jeffrey V Winston MD  Ophthalmology Corporation  Alice Song MD Corp  David Marshburn DO  Richard L Nguyen MD  Thanhlan Quan MD  Viet Dang MD  Stanley S. Kim MD  Eye Associates of Orange County  Arthur Lu MD  William N May MD  Triet M Nguyen MD  Cuong-Dung T Do MD  Bolsa Laser Eye Center  Mark Bronstein MD  Orange Coast Eye Center  Premier Eye Institute  Advanced Eye Care Clinic  Orange Coast Eye Center  LaPalma Ophthalmology Associates  LaPalma Ophthalmology Associates  South Coast Laser Center  South Coast Laser Center  Chao Vision Institute  Daniel C Kline MD Inc  Universal Vision Medical Center  VMR Institute  Carson,McBeath & Boswell, Inc.  Carson,McBeath & Boswell, Inc.  Carson,McBeath & Boswell, Inc.  VMR Institute  Robert G Starr MD PhD  Lasik Center Medical Group Inc  Nicholas Kokoris MD & Associates  Nicholas Kokoris MD & Associates  Lakeside Vision Center  Lakeside Vision Center  Frederick Raymond MD  Southland Eye  Southland Eye  Peter T Chen MD  Glen Jarus MD  Mary A Cote MD  Magan Medical Clinic  Atlantis Eye Care  Atlantis Eye Care  Complete Eye Care  Dualan & Frey MDs  Complete Eye Care  Lakewood Eye Physicians  Complete Eye Care Placentia, CaliforniaUpcoming Local Events2012-06-09
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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 Placentia
Nearby Placentia Hospitals *Placentia-Linda Hospital Kaiser Permanente Anaheim Medical Center St Jude Medical Center Anaheim Regional Medical Center Western Medical Center Anaheim Kindred Hospital Brea University Of California Irvine Medical Center Chapman Medical Center St Joseph Hospital Children's Hospital Orange County HealthBridge Children's Rehabilitation Hospital Garden Grove Hospital & Medical Center Kindred Hospital Santa Ana West Anaheim Medical Center Western Medical Center Santa Ana HEALTHSOUTH Tustin Rehabilitation Hospital Anaheim General Hospital Kindred Hospital La Mirada Tustin Hospital & Medical Center Whittier Hospital Medical Center La Palma Intercommunity Hospital Kindred Hospital Westminster Coastal Communities Hospital Fountain Valley Regional Hospital & Medical Center Norwalk Community Hospital Metropolitan State Hospital Presbyterian Intercommunity Hospital Los Alamitos Medical Center Orange Coast Memorial Medical Center Tri-City Regional Medical Center Huntington Beach Hospital Coast Plaza Doctors Hospital College Hospital Cerritos Citrus Valley Medical Center Queen of the Valley Campus Doctor's Hospital West Covina Vista Specialty Hospital of San Gabriel Valley Chino Valley Medical Center Kindred Hospital San Gabriel Valley Kaiser Permanente Medical Center Baldwin Park Citrus Valley Medical Center Inter Community Campus Bellflower Medical Center College Hospital Costa Mesa Kaiser Permanente Orange County Irvine Medical Center Pomona Valley Hospital Medical Center Kaiser Permanente Downey Medical Center Aurora Charter Oak Hospital San Dimas Community Hospital Greater El Monte Community Hospital Downey Regional Medical Center VA Long Beach Healthcare System Lakewood Regional Medical Center Casa Colina Centers for Rehabilitation Corona Regional Medical Center Beverly Hospital Montclair Hospital Medical Center Promise Hospital of East Los Angeles Suburban Medical Center Campus Community Hospital of Long Beach Hoag Memorial Hospital Presbyterian Rancho Los Amigos National Rehabilitation Center Corona Regional Medical Center Rehabilitation East Valley Hospital Medical Center BHC Alhambra Hospital Foothill Presbyterian Hospital Kindred Hospital Ontario City of Hope National Medical Center Long Beach Memorial Medical Center Miller Children's Hospital Pacific Hospital of Long Beach City of Angels Medical Center Ingleside Campus St Mary Medical Center Monterey Park Hospital St Francis Medical Center Garfield Medical Center Saddleback Memorial Medical Center Laguna Hills San Antonio Community 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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