Electroretinography Center - Palo Alto, CA
Palo Alto 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 Palo Alto * Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Stanford Eye Clinic  Stanford Eye Clinic  Stanford Eye Clinic  Stanford Eye Clinic  Stanford Eye Clinic  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  California Vitreoretinal Center  Sonja S Declercq MD  California Vitreoretinal Center  California Vitreoretinal Center  California Vitreoretinal Center  California Vitreoretinal Center  Menlo Medical Clinic  Tearse Eye Center  Tearse Eye Center  L Scott Feiler MD  LaserVue Eye Center  Drs Beers Shakinian & Volpicelli  Drs Beers Shakinian & Volpicelli  Drs Beers Shakinian & Volpicelli  Robert L M Hetland & Thomas Berard MDs  Robert L M Hetland & Thomas Berard MDs  Altos Eye Physicians  Cockerham Eye Consultants  Altos Eye Physicians  Altos Eye Physicians  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  Carey Vision Medical Group  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  Camino Medical Group  Camino Medical Group  Camino Medical Group  Camino Medical Group  Camino Medical Group  Ninh Tran & Alan Susal MDs  Ninh Tran & Alan Susal MDs  Richard B Braunstein MD Inc  Silicon Valley Physicians  South Bay Retina Inc  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Kaiser Union City Eye Services  Robert C Black MD  Singer Cohn & Catmzaro MDs  Peninsula Eye Physicians Group  Peninsula Eye Physicians Group  Peninsula Eye Physicians Group  Peninsula Eye Physicians Group  Peninsula Eye Physicians Group  Singer Cohn & Catmzaro MDs  San Francisco Eye Institute  Kenneth C Low MD APC  Glaucoma Specialists  Kenneth C Low MD APC  Kenneth C Low MD APC  Palo Alto Medical Foundation Fremont Center  East Bay Retina Consultants  East Bay Retina Consultants  East Bay Retina Consultants  Maskeen Sabharwal MD  James J Song MD  Fang Tan MD  Rona Z Silkiss MD  Laser Eye Center of Silicon Valley  Spectrum Eye Physicians  Spectrum Eye Physicians  Spectrum Eye Physicians  Mission Valley Medical Eye Center  Gregory H Phan MD  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Carey Vision Medical Group  Randal T Pham MD  Khoa Nguyen MD  Winchester Optometry  Peter J Rutti MD  Castro Valley Eye Center  Castro Valley Eye Center Palo Alto, CaliforniaUpcoming Local Events2012-06-16
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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 Palo Alto
Nearby Palo Alto Hospitals *Lucile Packard Children's Hospital Menlo Park Surgical Hospital Stanford Hospital & Clinics VA Palo Alto Health Care System Kaiser Permanente Redwood City Medical Center Sequoia Hospital El Camino Hospital San Mateo Medical Center Kaiser Permanente Santa Clara Medical Center Fremont Hospital Mills Hospital Washington Hospital Kaiser Permanente Hayward Medical Center St Rose Hospital Mills-Peninsula Health Services O'Connor Hospital Santa Clara Valley Medical Center El Camino Hospital of Los Gatos Good Samaritan Hospital San Jose Eden Medical Center Regional Medical Center of San Jose Good Samaritan Hospital Mission Oaks Alameda County Medical Center Fairmont Campus John George Psychiatric Pavilion San Leandro Hospital Kindred Hospital San Francisco Bay Area Seton Medical Center Coastside Kaiser Permanente South San Francisco Medical Center Alameda Hospital ValleyCare Health System Pleasanton Seton Medical Center Kaiser Permanente San Jose Medical Center Alameda County Medical Center Highland Campus St Luke's Hospital Livermore Division of the VA Palo Alto Healthcare System San Francisco General Hospital San Ramon Regional Medical Center Valley Memorial Hospital Laguna Honda Hospital & Rehabilitation Center Alta Bates Summit Medical Center Summit Campus Kaiser Permanente Medical Center at Oakland California Pacific Medical Center Davies Campus UCSF Medical Center at Parnassus Saint Francis Memorial Hospital Children's Hospital & Research Center Oakland Chinese Hospital St Mary's Medical Center Kaiser Permanente San Francisco Medical Center UCSF Medical Center at Mount Zion California Pacific Medical Center Pacific Campus California Pacific Medical Center East Campus California Pacific Medical Center California Campus Alta Bates Summit Medical Center Alta Bates Campus Alta Bates Summit Medical Center Herrick Campus San Francisco VA Medical Center Kaiser Permanente Walnut Creek Medical Center Dominican Hospital John Muir Medical Center Walnut Creek Campus Sutter Maternity & Surgery 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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