Electroretinography Center - Victorville, CA
Victorville 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 Victorville * Valdez Eye Center  Eye Center  Edward J Puttre MD  Robert S Herrick MD  Inland Eye Institute  Inland Eye Institute  Inland Eye Institute  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  Retina Consultants of Southern California  Donald Shearer MD  Beaver Medical Group Redlands  Beaver Medical Group Redlands  Beaver Medical Group Redlands  Cheung S Wan MD  Childrens Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Carl S Shibata MD  Childrens Eye Institute  Pacific Eye Institute  Doheny Eye Center  Doheny Eye Center  Pabalan Eye Center  Riverside Eye Specialists  Riverside Eye Specialists  Riverside Eye Specialists  Claremont Eye Associates  Claremont Eye Associates  Claremont Eye Associates  David R McGrew MD  Riverside Medical Clinic  Riverside Medical Clinic  Retina Consultants of Southern California  Mark H Barak MD  California Laser Eye Associates  Dennis Chuck MD  Robert A Innocenzi MD  Jose C Briones Jr. MD  California Eye Specialists  California Eye Specialists  California Eye Specialists  California Eye Specialists  Foothill Eye Surgical Center  Kurwa Eye Center  York Laser Eye Medical  Tri-County Eye Institute  Inland Valley Retina Medical Associates Inc  Khanna Institute of Lasik  Inland Valley Retina Medical Associates Inc  Inland Valley Retina Medical Associates Inc  A M Palanca-Capistrano MD Inc  Atlantis Eye Care  Atlantis Eye Care  Wayne Martin MD  Dualan & Frey MDs  Magan Medical Clinic  Ocular Surgery Medical Associates  Ocular Surgery Medical Associates  Glen Jarus MD  Peter T Chen MD  I Q Laser Vision  Susie Y Wong  John D Zdral MD John Esser MD  NuVision Laser  OIC Eye Group  Garlan Lo MD  Vision Care Network  Arthur D Charap MD  John S Marshburn MD  Jan S Lukac MD  Phillips Eye Center  Phillips Eye Center  Arcadia Eye Center  Doheny Eye Center Arcadia  Doheny Eye Center Arcadia  Doheny Eye Center Arcadia  Ira E Opatowsky MD  Retina Vitreous Consultants  Randolph J Falk MD  El Monte Eye Clinic  Hemet Eye Medical & Surgical Center  Sheila L Wright-Scott MD  Southern California Glaucoma Consultants  Nazareth E Darakjian MD  California Eye Professionals  Pacific Eye Medical Group  California Eye Professionals  Pacific Eye Medical Group  Rulon D Beesley MD  Southern California Eye Care Victorville, 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 Victorville
Nearby Victorville Hospitals *Victor Valley Community Hospital Desert Valley Hospital St Mary Medical Center Mountains Community Hospital St Bernardine Medical Center Community Hospital of San Bernardino Robert H Ballard Rehabilitation Hospital Patton State Hospital Arrowhead Regional Medical Center Bear Valley Community Hospital Kaiser Permanente Fontana Medical Center Rancho Specialty Hospital Barstow Community Hospital VA Loma Linda Healthcare System Loma Linda University Children's Hospital Loma Linda University Medical Center Loma Linda University Medical Center East Campus Loma Linda University Behavioral Medicine Center Redlands Community Hospital San Antonio Community Hospital 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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