Electroretinography Center - Walnut Creek, CA
Walnut Creek 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 Walnut Creek * Pacific Eye Care Center  Walnut Creek Optical  Chou Harrison & Paul MD  Walnut Creek Optical  Chou Harrison & Paul MD  Chou Harrison & Paul MD  Michelle W Liu MD  LaserVue Eye Center  Bay Area Retina Associates  Diablo Valley Eye Center  Diablo Valley Eye Center  Bay Area Retina Associates  Diablo Valley Eye Center  Bay Area Retina Associates  Diablo Valley Eye Center  Rona Z Silkiss MD  Bay Area Retina Associates  Bay Area Retina Associates  California Eye Clinic  California Eye Clinic  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Chi-Hua Maria Fang MD  Lerner Eye Center  Lerner Eye Center  Contra Costa Eye Medical Center  Contra Costa Eye Medical Center  Contra Costa Eye Medical Center  Paul Row MD  Clark S Tsai MD Inc  Veterans Administration Outpatient Clinic  Veterans Administration Outpatient Clinic  Danville San Ramon Eye Medical Corp  Danville San Ramon Eye Medical Corp  Danville San Ramon Eye Medical Corp  Eye Physicians of the East Bay  Gupta Etwaru MD  East Bay Retina Consultants  Day & Good MDs  East Bay Retina Consultants  East Bay Retina Consultants  East Bay Eye Center  East Bay Eye Center  Children's Eye Care of Northern California  Turner Eye Institute Medical Group  Eye Clinic  Eye Clinic  Rose Shoshana Kiprov MD  Sorenson Ophthalmology  Sorenson Ophthalmology  Sorenson Ophthalmology  Eye Specialties Medical Group  Eye Specialties Medical Group  Kaiser Permanente Oakland Eye Care Services  Kaiser Permanente Oakland Eye Care Services  Batra Vision Medical Group  Batra Vision Medical Group  Kaiser Permanente Oakland Ophthalmology  Kaiser Permanente Oakland Ophthalmology  Kaiser Permanente Oakland Ophthalmology  Children's Hospital Oakland  Batra Vision Medical Group  Berkeley Ophthalmology Medical Group  Castro Valley Eye Center  Castro Valley Eye Center  Castro Valley Eye Center  John C Alden MD  Hubert Wong MD  Northern California Cornea Associates  Langham Lee & Horn MDs  Langham Lee & Horn MDs  Langham Lee & Horn MDs  Langham Lee & Horn MDs  Northern California Cornea Associates  Newton Medical Group  Amater Z Traylor Jr. MD  Eye Physicians of the East Bay  Eye Physicians of the East Bay  Eye Physicians of the East Bay  Eye Physicians of the East Bay  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Optima Ophthalmic Medical Associates Inc  Philip L Gardner MD Inc  Stephen E Post MD & Sophia Chen MD  Philip L Gardner MD Inc  Philip L Gardner MD Inc  Stephen E Post MD & Sophia Chen MD  Ellis Eye & Laser Medical Centers  Newman Lasik Centers  Paul H Ryan MD  Barry E Breaux MD Walnut Creek, 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 Walnut Creek
Nearby Walnut Creek Hospitals *Kaiser Permanente Walnut Creek Medical Center John Muir Medical Center Walnut Creek Campus John Muir Medical Center Concord Campus John Muir Behavioral Health Center VA Northern CA Healthcare System at Martinez Contra Costa Regional Medical Center San Ramon Regional Medical Center Alta Bates Summit Medical Center Alta Bates Campus Alameda County Medical Center Highland Campus Alta Bates Summit Medical Center Herrick Campus Kaiser Permanente Medical Center at Oakland Children's Hospital & Research Center Oakland Alta Bates Summit Medical Center Summit Campus Kindred Hospital San Francisco Bay Area John George Psychiatric Pavilion San Leandro Hospital Alameda County Medical Center Fairmont Campus Alameda Hospital Eden Medical Center Sutter Delta Medical Center Doctor's Medical Center San Pablo ValleyCare Health System Pleasanton St Helena Hospital Center for Behavioral Health St Rose Hospital Sutter Solano Medical Center Kaiser Permanente Vallejo Medical Center Kaiser Permanente Hayward Medical Center Chinese Hospital Saint Francis Memorial Hospital San Francisco General Hospital California Pacific Medical Center Pacific Campus Valley Memorial Hospital UCSF Medical Center at Mount Zion Kaiser Permanente San Francisco Medical Center St Luke's Hospital California Pacific Medical Center Davies Campus California Pacific Medical Center California Campus California Pacific Medical Center East Campus St Mary's Medical Center Telecare Solano Psychiatric Health Facility UCSF Medical Center at Parnassus Laguna Honda Hospital & Rehabilitation Center Washington Hospital Fremont Hospital NorthBay Medical Center Livermore Division of the VA Palo Alto Healthcare System San Francisco VA Medical Center Marin General Hospital Kentfield Rehabilitation & Specialty Hospital Kaiser Permanente South San Francisco Medical Center Seton Medical Center Mills Hospital Kaiser Permanente San Rafael Medical Center Mills-Peninsula Health Services Napa State Hospital San Mateo Medical Center Kaiser Permanente Redwood City Medical Center Novato Community Hospital Menlo Park Surgical Hospital Sequoia Hospital Queen of the Valley Medical Center VacaValley Hospital Lucile Packard Children's Hospital Stanford Hospital & Clinics Sonoma Valley Hospital VA Palo Alto Health Care System 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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