Electroretinography Center - Alexandria, VA
Alexandria 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 Alexandria * Jacob Clark MD  Drs Huberman & Pollack  Drs Huberman & Pollack  Eye Plastic Associates PC  Advanced Eye Care  Advanced Eye Care  Advanced Eye Care  Eye Center of Northern VA  Eye Center of Northern VA  Eye Center of Northern VA  Sina J Sabet MD  Preston C Calvert MD  Insight Vision Center  Amy Kotecha MD  Insight Vision Center  Bijan Youssefi MD  Falls Church Medical Center  Northern Virginia Ophthalmology Associates  The Arlington Eye Center Inc  The Arlington Eye Center Inc  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  Retina Centers of Washington  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  Northern Virginia Ophthalmology Associates  See Clearly Vision of Arlington  Jorge Campana MD  Joseph F Territo MD  Potomac Eye Center  Robert Kling MD  John R Karickhoff MD  Eye Consultants of Northern Virginia PC  Eye Consultants of Northern Virginia PC  Eye Consultants of Northern Virginia PC  Eye Consultants of Northern Virginia PC  Metropolitan Ophthalmology Associates  Eye Physicians of Virginia  Retina Consultants PC  Retina Consultants PC  Retina Consultants PC  Retina Consultants PC  Eye Physicians of Virginia  Silk Vision and Surgical Center  Retina Consultants PC  Metropolitan Ophthalmology Associates  Joseph J Timmes Jr. MD  Childrens National Medical Center Ophthalmology  Roger A Snyder MD  Capital Eye Consultants  Northern Virginia Center For Eye Care  Juliana Y Park MD PC  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  Leonard Barmak MD  The Eye Institute Inc  Eye Associates of Washington  Eye Associates of Washington  David Chow MD  Eye Associates of Washington  Mitchell Eye Institute  Mitchell Eye Institute  Daniel H Framm & Lisa F Sklar MDs  Daniel H Framm & Lisa F Sklar MDs  Fairfax Eye Associates  Fairfax Eye Associates  David R Notes MD  Aaron Figler MD  Babur B Lateef MD  Dressler Ophthalmology Assoc  Dressler Ophthalmology Assoc  Potomac Retina LLC  Maureen T O'Dea MD  Timothy J Malone MD  New Vew Eye Center  New Vew Eye Center  Heidi Lisker MD  Elle Milani MD  Ophthalmic Plastic Consultants  Joanne Crenshaw MD  Joanne Crenshaw MD  Sedgewick Eye Associates  Andy Hay MD  Virginia Eye Care Center  Virginia Eye Care Center  Alan Egge MD  Virginia Eye Center  Virginia Eye Center  Virginia Eye Center  Flinton Callahan II MD  Virginia Retina Center  Access Eye Center  Access Eye Center  Retina Institute of Virginia  Retina Institute of Virginia  Retina Institute of Virginia  Retina Institute of Virginia  Jeffrey J Zuravleff MD PC  Lee R Brock MD Alexandria, VirginiaUpcoming Local Events2012-06-02
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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 Alexandria
Nearby Alexandria Hospitals *The Specialty Hospital of Washington-Hadley Inova Alexandria Hospital Saint Elizabeth's Hospital Inova Mount Vernon Hospital Fort Washington Hospital The Specialty Hospital of Washington The George Washington University Hospital Virginia Hospital Center Dominion Hospital Georgetown University Hospital Howard University Hospital United Medical Center Children's National Medical Center National Rehabilitation Hospital Washington DC VA Medical Center Washington Hospital Center Sibley Memorial Hospital Southern Maryland Hospital Center Psychiatric Institute of Washington The HSC Pediatric Center Providence Hospital Inova Fairfax Hospital Inova Fairfax Hospital for Children Northern Virginia Mental Health Institute Gladys Spellman Specialty Hospital Prince George's Hospital Center Walter Reed Army Medical Center Washington Adventist Hospital National Institutes of Health Holy Cross Hospital Suburban Hospital Doctors Community Hospital Potomac Hospital Inova Fair Oaks Hospital Civista Medical Center Reston Hospital Center Laurel Regional Hospital Shady Grove Adventist Hospital Adventist Rehabilitation Hospital of Maryland Potomac Ridge Behavioral Health Adventist HealthCare Prince William Hospital Montgomery General Hospital Calvert Memorial Hospital Howard County General Hospital Inova Loudoun Hospital Center Anne Arundel Medical Center Baltimore Washington Medical Center Sheppard Pratt at Ellicott City 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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