Electroretinography Center - Dale City, VA
Dale City 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 Dale City * Potomac Retina LLC  Eye Consultants of Northern Virginia PC  Maureen T O'Dea MD  Eye Consultants of Northern Virginia PC  Aaron Figler MD  Babur B Lateef MD  Eye Consultants of Northern Virginia PC  Eye Consultants of Northern Virginia PC  Leonard Barmak MD  Andy Hay MD  Virginia Eye Care Center  Virginia Eye Care Center  Fairfax Eye Associates  Fairfax Eye Associates  David R Notes MD  Joseph F Territo MD  Insight Vision Center  Dressler Ophthalmology Assoc  Northern Virginia Ophthalmology Associates  Dressler Ophthalmology Assoc  Insight Vision Center  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  Potomac Eye Center  Advanced Eye Care  Alan Egge MD  Retina Consultants PC  Retina Consultants PC  Retina Consultants PC  Retina Consultants PC  Silk Vision and Surgical Center  Retina Consultants PC  Joseph J Timmes Jr. MD  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  Capital Eye Consultants  Eye Center of Northern VA  Eye Center of Northern VA  Roger A Snyder MD  Childrens National Medical Center Ophthalmology  Northern Virginia Center For Eye Care  Juliana Y Park MD PC  Eye Plastic Associates PC  Daniel H Framm & Lisa F Sklar MDs  Daniel H Framm & Lisa F Sklar MDs  Mitchell Eye Institute  Mitchell Eye Institute  Preston C Calvert MD  Sina J Sabet MD  Advanced Eye Care  Advanced Eye Care  Robert Kling MD  Jorge Campana MD  John R Karickhoff MD  Eye Center of Northern VA  The Eye Institute Inc  Eye Associates of Washington  Eye Associates of Washington  David Chow MD  Eye Associates of Washington  Drs Huberman & Pollack  Drs Huberman & Pollack  Falls Church Medical Center  Bijan Youssefi MD  New Vew Eye Center  New Vew Eye Center  The Arlington Eye Center Inc  The Arlington Eye Center Inc  Retina Centers of Washington  See Clearly Vision of Arlington  Eye Physicians of Virginia  Heidi Lisker MD  Elle Milani MD  Ophthalmic Plastic Consultants  Metropolitan Ophthalmology Associates  Metropolitan Ophthalmology Associates  Eye Physicians of Virginia  Amy Kotecha MD  Jacob Clark MD  Access Eye Center  Access Eye Center  Timothy J Malone MD  Retina Institute of Virginia  Retina Institute of Virginia  Retina Institute of Virginia  Retina Institute of Virginia  Jeffrey J Zuravleff MD PC  Joanne Crenshaw MD  Joanne Crenshaw MD  Sedgewick Eye Associates  Lee R Brock MD  Virginia Eye Center  Virginia Eye Center  Virginia Eye Center  Alan Egge MD  Alan Egge MD Dale City, VirginiaUpcoming Local Events2012-05-27
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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 Dale City
Nearby Dale City Hospitals *Potomac Hospital Prince William Hospital Inova Mount Vernon Hospital Inova Fairfax Hospital Inova Fairfax Hospital for Children Northern Virginia Mental Health Institute Inova Fair Oaks Hospital Inova Alexandria Hospital Dominion Hospital Fort Washington Hospital Virginia Hospital Center Civista Medical Center The Specialty Hospital of Washington-Hadley Reston Hospital Center Saint Elizabeth's Hospital Georgetown University Hospital The George Washington University Hospital Sibley Memorial Hospital Mary Washington Hospital Psychiatric Institute of Washington The Specialty Hospital of Washington Howard University Hospital Southern Maryland Hospital Center Children's National Medical Center Fauquier Hospital National Rehabilitation Hospital Washington DC VA Medical Center Washington Hospital Center United Medical Center Providence Hospital National Institutes of Health The HSC Pediatric Center Suburban Hospital Walter Reed Army Medical Center Gladys Spellman Specialty Hospital Washington Adventist Hospital Prince George's Hospital Center Holy Cross Hospital Inova Loudoun Hospital Center Adventist Rehabilitation Hospital of Maryland Potomac Ridge Behavioral Health Adventist HealthCare Shady Grove Adventist Hospital Doctors Community Hospital Graydon Manor Behavioral Health 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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