Electroretinography Center - Rancho Santa Margarita, CA
Rancho Santa Margarita 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 Rancho Santa Margarita * Jan S Lukac MD  Atlantis Eyecare  Atlantis Eyecare  Advanced Eye Medical Group  Advanced Eye Medical Group  Eye Associates of Orange County  Eye Associates of Orange County  Orange County Retina Medical Group  Retina Associates of Orange County  David Gwynn MD  Retina Associates of Orange County  Orange County Retina Medical Group  M Polly McKinstry MD  Sheldon Nankin MD  David Gwynn MD  Jude J Santiago MD  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  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  South Coast Eye Care Centers  Shahla Abedi MD Inc  Shahla Abedi MD Inc  Eye Center of Orange County  Eye Center of Orange County  Pacific Summit Eye Medical Center  Tayani Eye Institute  Tayani Eye Institute  Irvine Eye Physicians and Surgeons Inc  Irvine Eye Physicians and Surgeons Inc  Howard Conn MD Inc  Jayne N Ge MD  Marjorie A Mosier MD  Lakeside Vision Center  Lakeside Vision Center  Daniel C Kline MD Inc  A M Palanca-Capistrano MD Inc  Inland Valley Retina Medical Associates Inc  Khanna Institute of Lasik  Inland Valley Retina Medical Associates Inc  Inland Valley Retina Medical Associates 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  Tri-County Eye Institute  Paul A Brailsford MD  Pacific Eye Medical Group  Michael B Lappin MD  Pacific Eye Medical Group  Orange County Retina Medical Group  Lasik Center Medical Group Inc  David Sacks MD  Sierra Eye & Laser Institute  TLC Laser Center  Cory Brame MD  William P Chen MD FACS  W Andrew Cies MD  Arlene Gwon MD  Stephen Johnson MD  Lyon Laser Eye Institute  Stephen Prepas MD  Richard A Weiss MD  Arthur D Charap MD  South Coast Laser Center  South Coast Laser Center  Chien Ko Wu & Meei Ling Wu MDs  Retina Institute  Florencio C Ching MD  David A Sami MD  Charles E Keller MD  Felizardo S Camilon MD  George H Garcia MD Inc  John Kleinberg MD  George H Garcia MD Inc  Aisha Simjee MD  Sean S Bahri MD  Gary S Reiter MD  John D Zdral MD John Esser MD  Universal Vision Medical Center  UCI Medical Center Ophthalmology  Brent Norman MD  Astorino Eye Center Rancho Santa Margarita, CaliforniaUpcoming Local Events2012-06-09
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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 Rancho Santa Margarita
Nearby Rancho Santa Margarita Hospitals *Children's Hospital of Orange County at Mission Mission Hospital Saddleback Memorial Medical Center Laguna Hills Kaiser Permanente Orange County Irvine Medical Center Mission Hospital Laguna Beach Saddleback Memorial Medical Center San Clemente Tustin Hospital & Medical Center HEALTHSOUTH Tustin Rehabilitation Hospital Western Medical Center Santa Ana Corona Regional Medical Center Rehabilitation Chapman Medical Center Corona Regional Medical Center HealthBridge Children's Rehabilitation Hospital Coastal Communities Hospital College Hospital Costa Mesa Children's Hospital Orange County St Joseph Hospital Kindred Hospital Santa Ana Hoag Memorial Hospital Presbyterian Kaiser Permanente Anaheim Medical Center University Of California Irvine Medical Center Fountain Valley Regional Hospital & Medical Center Garden Grove Hospital & Medical Center Kaiser Permanente Riverside Medical Center Orange Coast Memorial Medical Center Inland Valley Medical Center Western Medical Center Anaheim Parkview Community Hospital Medical Center Placentia-Linda Hospital Huntington Beach Hospital Anaheim Regional Medical Center Kindred Hospital Westminster Rancho Springs Medical Center Vista Hospital of Riverside Menifee Valley Medical Center St Jude Medical Center West Anaheim Medical Center Anaheim General Hospital Kindred Hospital Brea Riverside Community Hospital Fallbrook Hospital Chino Valley Medical Center La Palma Intercommunity Hospital Los Alamitos Medical Center Moreno Valley Community Hospital Kindred Hospital Ontario Riverside County Regional Medical Center Kindred Hospital La Mirada Tri-City Regional Medical Center Montclair Hospital Medical Center VA Long Beach Healthcare System Kaiser Permanente Fontana Medical Center Pomona Valley Hospital Medical Center Whittier Hospital Medical Center San Antonio Community Hospital Norwalk Community Hospital Rancho Specialty Hospital Casa Colina Centers for Rehabilitation Community Hospital of Long Beach Metropolitan State Hospital Arrowhead Regional Medical Center College Hospital Cerritos Presbyterian Intercommunity Hospital Coast Plaza Doctors Hospital Bellflower Medical Center Loma Linda University Children's Hospital Loma Linda University Medical Center San Dimas Community Hospital Lakewood Regional Medical Center Loma Linda University Medical Center East Campus St Mary Medical 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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