Electroretinography Center - Orange, CA
Orange 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 Orange * Retina Institute  Florencio C Ching MD  George H Garcia MD Inc  David A Sami MD  George H Garcia MD Inc  Charles E Keller MD  John Kleinberg MD  Sheldon Nankin MD  Aisha Simjee MD  Felizardo S Camilon MD  Chien Ko Wu & Meei Ling Wu MDs  Orange County Retina Medical Group  Orange County Retina Medical Group  UCI Medical Center Ophthalmology  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  Retina Associates of Orange County  Orange County Ophthalmology  Orange County Ophthalmology  Eye Associates of Orange County  Arthur D Charap MD  Advanced Eye Center  Chao Vision Institute  South Coast Laser Center  South Coast Laser Center  John S Marshburn MD  Daniel C Kline MD Inc  Thanhlan Quan MD  Viet Dang MD  Mark Bronstein MD  Orange Coast Eye Center  Premier Eye Institute  Advanced Eye Care Clinic  Orange Coast Eye Center  Hyong S Choe MD  Richard L Nguyen MD  Lasik Center Medical Group Inc  Alice Song MD Corp  Ophthalmology Corporation  Lakeside Vision Center  Lakeside Vision Center  Universal Vision Medical Center  John D Zdral MD John Esser MD  J Nickolas Berbos MD  Vision Care Network  Fullerton Eye Medical Center  William Mosier MD  Triet M Nguyen MD  Arthur Lu MD  Cuong-Dung T Do MD  Stanley S. Kim MD  Bolsa Laser Eye Center  Retina Consultants of Orange County  Sam Goldberger MD  Retina Consultants of Orange County  Lingua Vision Surgical Group  TLC Laser Center  Atlantis Eyecare  Southland Eye  Southland Eye  Shahla Abedi MD Inc  Shahla Abedi MD Inc  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Irvine Eye Physicians and Surgeons Inc  Irvine Eye Physicians and Surgeons Inc  Howard Conn MD Inc  UCI Medical Center Ophthalmology  Jayne N Ge MD  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Marjorie A Mosier MD  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Robert Everakes MD  Nelson Noguchi MD  Pacific Summit Eye Medical Center  Jan S Lukac MD  VMR Institute  Carson,McBeath & Boswell, Inc.  Carson,McBeath & Boswell, Inc.  Carson,McBeath & Boswell, Inc.  VMR Institute  Robert G Starr MD PhD  Mary A Cote MD  Global Laser Vision  Sean S Bahri MD  Gary S Reiter MD  Sally I Kim MD  W Andrew Cies MD Orange, 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 Orange
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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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