Electroretinography Center - Redwood City, CA
Redwood City 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 Redwood City * Tearse Eye Center  Tearse Eye Center  L Scott Feiler MD  Robert L M Hetland & Thomas Berard MDs  Robert L M Hetland & Thomas Berard MDs  Ninh Tran & Alan Susal MDs  Ninh Tran & Alan Susal MDs  Richard B Braunstein MD Inc  Menlo Medical Clinic  California Vitreoretinal Center  Sonja S Declercq MD  California Vitreoretinal Center  California Vitreoretinal Center  California Vitreoretinal Center  California Vitreoretinal Center  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  Stanford Eye Clinic  Stanford Eye Clinic  Stanford Eye Clinic  Stanford Eye Clinic  Stanford Eye Clinic  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  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  Peninsula Eye Physicians Group  N CA Retina Vitreous Associates Inc  Peninsula Eye Physicians Group  Peninsula Eye Physicians Group  Peninsula Eye Physicians Group  N CA Retina Vitreous Associates Inc  Peninsula Eye Physicians Group  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  San Francisco Eye Institute  Glaucoma Specialists  LaserVue Eye Center  Drs Beers Shakinian & Volpicelli  Drs Beers Shakinian & Volpicelli  Drs Beers Shakinian & Volpicelli  Altos Eye Physicians  Cockerham Eye Consultants  Altos Eye Physicians  Altos Eye Physicians  Carey Vision Medical Group  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  Camino Medical Group  Camino Medical Group  Camino Medical Group  Camino Medical Group  Camino Medical Group  Peninsula Ophthalmology Group  Kim L Cooper DO  Robert R Elliston MD  Robert R Elliston MD  Bruce Kirschner MD  Peninsula Ophthalmology Group  James H Abrams MD  Silicon Valley Physicians  South Bay Retina Inc  Batra Vision Medical Group  Batra Vision Medical Group  Batra Vision Medical Group  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Singer Cohn & Catmzaro MDs  Singer Cohn & Catmzaro MDs  Robert C Black MD  Turner Eye Institute Medical Group  Kenneth C Low MD APC  Kenneth C Low MD APC  Kenneth C Low MD APC  Castro Valley Eye Center  Eye Specialties Medical Group  Bay Area Retina Associates  Eye Specialties Medical Group  Castro Valley Eye Center  Bay Area Retina Associates  Castro Valley Eye Center  Bay Area Retina Associates  James J Song MD  Fang Tan MD Redwood City, 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 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 Redwood City
Nearby Redwood City Hospitals *Kaiser Permanente Redwood City Medical Center Sequoia Hospital Menlo Park Surgical Hospital Lucile Packard Children's Hospital Stanford Hospital & Clinics San Mateo Medical Center VA Palo Alto Health Care System Mills Hospital Mills-Peninsula Health Services El Camino Hospital Kaiser Permanente Hayward Medical Center St Rose Hospital Fremont Hospital Washington Hospital Seton Medical Center Coastside Kaiser Permanente Santa Clara Medical Center Alameda County Medical Center Fairmont Campus Eden Medical Center Kaiser Permanente South San Francisco Medical Center San Leandro Hospital John George Psychiatric Pavilion Kindred Hospital San Francisco Bay Area Seton Medical Center Alameda Hospital O'Connor Hospital Santa Clara Valley Medical Center El Camino Hospital of Los Gatos St Luke's Hospital San Francisco General Hospital Alameda County Medical Center Highland Campus Laguna Honda Hospital & Rehabilitation Center Good Samaritan Hospital San Jose Regional Medical Center of San Jose Good Samaritan Hospital Mission Oaks California Pacific Medical Center Davies Campus UCSF Medical Center at Parnassus Alta Bates Summit Medical Center Summit Campus Kaiser Permanente Medical Center at Oakland Saint Francis Memorial Hospital St Mary's Medical Center ValleyCare Health System Pleasanton Chinese Hospital Kaiser Permanente San Francisco Medical Center UCSF Medical Center at Mount Zion California Pacific Medical Center Pacific Campus California Pacific Medical Center California Campus California Pacific Medical Center East Campus Children's Hospital & Research Center Oakland San Ramon Regional Medical Center San Francisco VA Medical Center Alta Bates Summit Medical Center Alta Bates Campus Alta Bates Summit Medical Center Herrick Campus Livermore Division of the VA Palo Alto Healthcare System Valley Memorial Hospital Kaiser Permanente San Jose Medical Center Kaiser Permanente Walnut Creek Medical Center John Muir Medical Center Walnut Creek Campus Doctor's Medical Center San Pablo 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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