Electroretinography Center - Lake Forest, CA
Lake Forest 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 Lake Forest * Eye Center of Orange County  Eye Center of Orange County  Henry Cheng MD  John Cheng MD  William L McCarthy Jr. MD Inc  South Coast Eye Care Centers  South Coast Eye Care Centers  South Coast Eye Care Centers  Jude J Santiago MD  South Coast Eye Care Centers  Orange County Retina Medical Group  Retina Associates of Orange County  Retina Associates of Orange County  Orange County Retina Medical Group  M Polly McKinstry MD  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Shahla Abedi MD Inc  Shahla Abedi MD Inc  Pacific Summit Eye Medical Center  Irvine Eye Physicians and Surgeons Inc  Irvine Eye Physicians and Surgeons Inc  Howard Conn MD Inc  Jayne N Ge MD  Marjorie A Mosier MD  Atlantis Eyecare  Atlantis Eyecare  Jan S Lukac MD  Advanced Eye Medical Group  Advanced Eye Medical Group  David Gwynn MD  Sheldon Nankin MD  David Gwynn MD  Eye Associates of Orange County  Eye Associates of Orange County  Lakeside Vision Center  Lakeside Vision Center  Daniel C Kline MD Inc  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Chao Vision Institute  Lasik Center Medical Group Inc  TLC Laser Center  Cory Brame MD  Stephen Prepas MD  Richard A Weiss MD  William P Chen MD FACS  W Andrew Cies MD  Arlene Gwon MD  Stephen Johnson MD  Lyon Laser Eye Institute  Orange County Retina Medical Group  Paul A Brailsford MD  Pacific Eye Medical Group  Michael B Lappin MD  David Sacks MD  Sierra Eye & Laser Institute  Pacific Eye Medical Group  Tayani Eye Institute  Tayani Eye Institute  South Coast Laser Center  South Coast Laser Center  Sean S Bahri MD  Gary S Reiter MD  Retina Institute  Florencio C Ching MD  David A Sami MD  Charles E Keller MD  Felizardo S Camilon MD  Brent Norman MD  Chien Ko Wu & Meei Ling Wu MDs  Universal Vision Medical Center  Steven G Yoelin MD  Astorino Eye Center  John Kleinberg MD  Aisha Simjee MD  Aesthetic Eye Care Institute  George H Garcia MD Inc  George H Garcia MD Inc  Feinerman Vision Center  Orange County Retina Medical Group  Arthur D Charap MD  Mark Bronstein MD  UCI Medical Center Ophthalmology  Orange Coast Eye Center  Advanced Eye Care Clinic Lake Forest, 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 Lake Forest
Nearby Lake Forest Hospitals *Saddleback Memorial Medical Center Laguna Hills Kaiser Permanente Orange County Irvine Medical Center Children's Hospital of Orange County at Mission Mission Hospital Mission Hospital Laguna Beach Tustin Hospital & Medical Center HEALTHSOUTH Tustin Rehabilitation Hospital Western Medical Center Santa Ana Coastal Communities Hospital College Hospital Costa Mesa Hoag Memorial Hospital Presbyterian Saddleback Memorial Medical Center San Clemente Chapman Medical Center HealthBridge Children's Rehabilitation Hospital Kindred Hospital Santa Ana Children's Hospital Orange County St Joseph Hospital Fountain Valley Regional Hospital & Medical Center Orange Coast Memorial Medical Center University Of California Irvine Medical Center Garden Grove Hospital & Medical Center Huntington Beach Hospital Kaiser Permanente Anaheim Medical Center Western Medical Center Anaheim Corona Regional Medical Center Rehabilitation Kindred Hospital Westminster Corona Regional Medical Center Placentia-Linda Hospital Anaheim Regional Medical Center West Anaheim Medical Center Anaheim General Hospital St Jude Medical Center Kindred Hospital Brea Los Alamitos Medical Center La Palma Intercommunity Hospital Kaiser Permanente Riverside Medical Center Tri-City Regional Medical Center VA Long Beach Healthcare System Parkview Community Hospital Medical Center Kindred Hospital La Mirada Community Hospital of Long Beach Chino Valley Medical Center Inland Valley Medical Center Whittier Hospital Medical Center Norwalk Community Hospital College Hospital Cerritos Metropolitan State Hospital St Mary Medical Center Bellflower Medical Center Coast Plaza Doctors Hospital Lakewood Regional Medical Center Long Beach Memorial Medical Center Miller Children's Hospital Pacific Hospital of Long Beach Presbyterian Intercommunity Hospital Kindred Hospital Ontario Riverside Community Hospital Kaiser Permanente Downey Medical Center Rancho Springs Medical Center Montclair Hospital Medical Center Promise Hospital of East Los Angeles Suburban Medical Center Campus Pomona Valley Hospital Medical Center Vista Hospital of Riverside Downey Regional Medical Center Fallbrook Hospital Menifee Valley Medical Center Casa Colina Centers for Rehabilitation Citrus Valley Medical Center Queen of the Valley Campus Rancho Los Amigos National Rehabilitation Center San Antonio Community Hospital San Dimas Community Hospital Doctor's Hospital West Covina Kindred Hospital San Gabriel Valley Vista Specialty Hospital of San Gabriel Valley Citrus Valley Medical Center Inter Community Campus 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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