Electroretinography Center - Colton, CA
Colton 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 Colton * Inland Eye Institute  Inland Eye Institute  Inland Eye Institute  Edward J Puttre MD  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  Robert S Herrick MD  Eye Center  Retina Consultants of Southern California  Donald Shearer MD  Doheny Eye Center  Doheny Eye Center  Pabalan Eye Center  Riverside Eye Specialists  Riverside Eye Specialists  Riverside Eye Specialists  David R McGrew MD  Riverside Medical Clinic  Riverside Medical Clinic  Beaver Medical Group Redlands  Retina Consultants of Southern California  Beaver Medical Group Redlands  Beaver Medical Group Redlands  Inland Valley Retina Medical Associates Inc  Khanna Institute of Lasik  Inland Valley Retina Medical Associates Inc  Inland Valley Retina Medical Associates Inc  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Carl S Shibata MD  Pacific Eye Institute  Childrens Eye Institute  A M Palanca-Capistrano MD Inc  Childrens Eye Institute  Tri-County Eye Institute  Robert A Innocenzi MD  Claremont Eye Associates  Claremont Eye Associates  Claremont Eye Associates  Mark H Barak MD  California Laser Eye Associates  Dennis Chuck MD  Valdez Eye Center  Hemet Eye Medical & Surgical Center  California Eye Professionals  California Eye Professionals  John D Zdral MD John Esser MD  Wayne Martin MD  Arthur D Charap MD  LoBue Laser & Eye Medical Center  Atlantis Eyecare  Atlantis Eyecare  Foothill Eye Surgical Center  Kurwa Eye Center  California Eye Specialists  John S Marshburn MD  California Eye Specialists  California Eye Specialists  California Eye Specialists  York Laser Eye Medical  Atlantis Eye Care  Atlantis Eye Care  Vision Care Network  Dualan & Frey MDs  Jose C Briones Jr. MD  Magan Medical Clinic  I Q Laser Vision  Chien Ko Wu & Meei Ling Wu MDs  Susie Y Wong  Jan S Lukac MD  Jude J Santiago MD  John Cheng MD  Henry Cheng MD  William L McCarthy Jr. MD Inc  Pacific Summit Eye Medical Center  Orange County Retina Medical Group  Paul A Brailsford MD  Orange County Retina Medical Group  Retina Associates of Orange County  Pacific Eye Medical Group  Michael B Lappin MD  Retina Associates of Orange County  OIC Eye Group  Orange County Retina Medical Group  M Polly McKinstry MD  Retina Institute  David Sacks MD  Sierra Eye & Laser Institute  Pacific Eye Medical Group  Florencio C Ching MD  Eye Center of Orange County Colton, CaliforniaUpcoming Local Events2012-05-28
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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 Colton
Nearby Colton Hospitals *Arrowhead Regional Medical Center Loma Linda University Children's Hospital Loma Linda University Medical Center Robert H Ballard Rehabilitation Hospital Community Hospital of San Bernardino VA Loma Linda Healthcare System Loma Linda University Medical Center East Campus St Bernardine Medical Center Kaiser Permanente Fontana Medical Center Loma Linda University Behavioral Medicine Center Redlands Community Hospital Riverside Community Hospital Patton State Hospital Parkview Community Hospital Medical Center Riverside County Regional Medical Center Rancho Specialty Hospital Kaiser Permanente Riverside Medical Center Moreno Valley Community Hospital Mountains Community Hospital San Antonio Community Hospital Kindred Hospital Ontario Vista Hospital of Riverside Corona Regional Medical Center Corona Regional Medical Center Rehabilitation Chino Valley Medical Center Montclair Hospital Medical Center San Gorgonio Memorial Hospital Casa Colina Centers for Rehabilitation Pomona Valley Hospital Medical Center Menifee Valley Medical Center Bear Valley Community Hospital Desert Valley Hospital San Dimas Community Hospital Hemet Valley Medical Center St Mary Medical Center Aurora Charter Oak Hospital East Valley Hospital Medical Center Victor Valley Community Hospital Foothill Presbyterian Hospital Kaiser Permanente Anaheim Medical Center Placentia-Linda Hospital Citrus Valley Medical Center Inter Community Campus Inland Valley Medical Center Kindred Hospital San Gabriel Valley Kindred Hospital Brea Chapman 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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