Electroretinography Center - San Clemente, CA
San Clemente 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 San Clemente * Henry Cheng MD  Harvard Eye Associates  Harvard Eye Associates  Tayani Eye Institute  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Tayani Eye Institute  Eye Associates of Orange County  Eye Associates of Orange County  David Gwynn MD  Sheldon Nankin MD  David Gwynn MD  Advanced Eye Medical Group  Advanced Eye Medical Group  South Coast Eye Care Centers  South Coast Eye Care Centers  Jan S Lukac MD  Shahla Abedi MD Inc  Shahla Abedi MD Inc  Orange County Retina Medical Group  Retina Associates of Orange County  Retina Associates of Orange County  Orange County Retina Medical Group  M Polly McKinstry MD  Jude J Santiago MD  South Coast Eye Care Centers  South Coast Eye Care Centers  John Cheng MD  William L McCarthy Jr. MD Inc  Eye Center of Orange County  Eye Center of Orange County  Atlantis Eyecare  Atlantis Eyecare  Pacific Summit Eye Medical Center  Irvine Eye Physicians and Surgeons Inc  Irvine Eye Physicians and Surgeons Inc  Howard Conn MD Inc  Jayne N Ge MD  Marjorie A Mosier 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  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Lakeside Vision Center  Lakeside Vision Center  William P Chen MD FACS  Arlene Gwon MD  Stephen Johnson MD  Lyon Laser Eye Institute  Cory Brame MD  Stephen Prepas MD  Richard A Weiss MD  W Andrew Cies MD  Daniel C Kline MD Inc  TLC Laser Center  Chao Vision Institute  Lasik Center Medical Group Inc  Sean S Bahri MD  Gary S Reiter MD  Fallbrook Eye Surgery  Frederick W Knapp Jr. DO  Innovision Eye Care Center  Brent Norman MD  Astorino Eye Center  Aesthetic Eye Care Institute  Steven G Yoelin MD  South Coast Laser Center  South Coast Laser Center  Feinerman Vision Center  Orange County Retina Medical Group  Pendleton Eye Center  Orange County Retina Medical Group  Paul A Brailsford MD  Pacific Eye Medical Group  Michael B Lappin MD  David Sacks MD  Sierra Eye & Laser Institute  Pacific Eye Medical Group  Morris Eye Group  Bradley Greider MD & Associates  Regg V Antle MD  Paul M Bonds MD  Bradley Greider MD & Associates  Eye Surgery Associates  Universal Vision Medical Center  LoBue Laser & Eye Medical Center  Retina Institute  Florencio C Ching MD  A M Palanca-Capistrano MD Inc  Southland Eye San Clemente, CaliforniaUpcoming Local Events2012-06-03
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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 San Clemente
Nearby San Clemente Hospitals *Saddleback Memorial Medical Center San Clemente Mission Hospital Laguna Beach Children's Hospital of Orange County at Mission Mission Hospital Saddleback Memorial Medical Center Laguna Hills Kaiser Permanente Orange County Irvine Medical Center Fallbrook Hospital Hoag Memorial Hospital Presbyterian College Hospital Costa Mesa Inland Valley Medical Center Tustin Hospital & Medical Center Tri-City Medical Center Coastal Communities Hospital HEALTHSOUTH Tustin Rehabilitation Hospital Rancho Springs Medical Center Western Medical Center Santa Ana Fountain Valley Regional Hospital & Medical Center Orange Coast Memorial Medical Center Chapman Medical Center HealthBridge Children's Rehabilitation Hospital Kindred Hospital Santa Ana Children's Hospital Orange County St Joseph Hospital Huntington Beach Hospital Garden Grove Hospital & Medical Center University Of California Irvine Medical Center Corona Regional Medical Center Rehabilitation Corona Regional Medical Center Kaiser Permanente Anaheim Medical Center Kindred Hospital Westminster Western Medical Center Anaheim Menifee Valley Medical Center Scripps Memorial Hospital Encinitas Encinitas Nursing & Rehabilitation Kaiser Permanente Riverside Medical Center Anaheim Regional Medical Center Placentia-Linda Hospital Vista Hospital of Riverside 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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