Electroretinography Center - Aspen Hill, MD
Aspen Hill 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 Aspen Hill * Bradley Eye Associates Inc  Natasha Herz & Stephen P Ginsberg MDs  Natasha Herz & Stephen P Ginsberg MDs  Stuart H Lessans MD  Stuart H Lessans MD  Robert H Chu MD PA  Rockville Eye Associates  Lawrence Frank MD  Lawrence Frank MD  Hammerman Wanicur & Kane MDs  Rockville Eye Associates  Hammerman Wanicur & Kane MDs  Hammerman Wanicur & Kane MDs  Marshall P Keys MD  Rockville Eye Associates  Hammerman Wanicur & Kane MDs  Gerald Rogell MD  Robert A Ralph MD  The Eye Center Inc  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  The Retina Group Of Washington  Milne Eye Medical Center  Visionary Opthalmalogy  Champlain Opthalmologists  Maryland Eye Consultants & Surgeons  Champlain Opthalmologists  Maryland Eye Consultants & Surgeons  Maryland Eye Consultants & Surgeons  Maryland Eye Consultants & Surgeons  Visionary Opthalmalogy  Visionary Opthalmalogy  Retina Consultants PC  Maryland Eye Consultants & Surgeons  Retina Consultants PC  Retina Consultants PC  Retina Consultants PC  David F Plotsky MD PC  Retina Consultants PC  Bethesda Retina LLC  Rosalie L Bair MD  Harry H Huang MD  Medical Eye Center PA  Medical Eye Center PA  Medical Eye Center PA  Medical Eye Center PA  Jerome B Gabry MD  Narieman Nik MD  Charles F Bahn MD  Robert B Kaufman MD  Mitchell Eye Institute  Mitchell Eye Institute  George A Patterson MD  John F Anderschat MD  Marcia L Hutcheon MD  Bethesda Neurology LLC  Herbert B Gould MD  Michael D Baum MD  Drs Jonathan S Lyons & Thomas Yau MD  Drs Jonathan S Lyons & Thomas Yau MD  Drs Rodman Engelstein & Gutmark MD  Drs Rodman Engelstein & Gutmark MD  Drs Rodman Engelstein & Gutmark MD  Joseph Snyder MD  The Eye Center Inc  Glaser & Luck MDs  James A Loreto MD  Glaser & Luck MDs  Retina Centers of Washington  The Eye Center Inc  Shady Grove Ophthalmology  Edward A Tsoy MD  National Retina Institute  Metropolitan Ophthalmology Associates  Metropolitan Ophthalmology Associates  Washington Eye Physicians & Surgeons  Washington Eye Physicians & Surgeons  Brooks G Brown III MD  The Retina Group Of Washington  Washington Eye Physicians & Surgeons  Drs Blackburn Hamill & Mackin  Washington Eye Physicians & Surgeons  The Retina Group Of Washington  Washington Eye Physicians & Surgeons  The Retina Group Of Washington  Washington Eye Physicians & Surgeons  Washington Eye Physicians & Surgeons  Washington Eye Physicians & Surgeons  Eye Doctors of Washington  Eye Doctors of Washington  Eye Doctors of Washington  Eye Doctors of Washington  Eye Doctors of Washington  Eye Doctors of Washington  David J Levine MD PA  Farhad Naseh MD Aspen Hill, MarylandUpcoming 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 Aspen Hill
Nearby Aspen Hill Hospitals *Suburban Hospital Holy Cross Hospital National Institutes of Health Montgomery General Hospital Shady Grove Adventist Hospital Adventist Rehabilitation Hospital of Maryland Potomac Ridge Behavioral Health Adventist HealthCare Walter Reed Army Medical Center Washington Adventist Hospital Psychiatric Institute of Washington Sibley Memorial Hospital Providence Hospital National Rehabilitation Hospital Washington DC VA Medical Center Washington Hospital Center The HSC Pediatric Center Laurel Regional Hospital Children's National Medical Center Georgetown University Hospital Howard University Hospital The George Washington University Hospital Virginia Hospital Center Gladys Spellman Specialty Hospital Prince George's Hospital Center Doctors Community Hospital The Specialty Hospital of Washington Howard County General Hospital Dominion Hospital United Medical Center Saint Elizabeth's Hospital Reston Hospital Center Inova Fairfax Hospital Inova Fairfax Hospital for Children Northern Virginia Mental Health Institute Inova Alexandria Hospital The Specialty Hospital of Washington-Hadley Sheppard Pratt at Ellicott City Inova Fair Oaks Hospital Inova Loudoun Hospital Center Springfield Hospital Center Inova Mount Vernon Hospital Spring Grove Hospital Center Fort Washington Hospital North Spring Behavioral Healthcare Baltimore Washington Medical Center Northwest Hospital Southern Maryland Hospital Center Kernan Hospital Saint Agnes Hospital Graydon Manor Behavioral Health Bon Secours Baltimore Health System Harbor Hospital Center Baltimore VA Medical Center University of Maryland Medical Center University Specialty Hospital Maryland General Hospital Mercy Medical Center Frederick Memorial Hospital Levindale Hebrew Geriatric Center & Hospital Sinai Hospital of Baltimore Prince William Hospital Anne Arundel Medical Center Mt Washington Pediatric Hospital Kennedy Krieger Institute Johns Hopkins Hospital Union Memorial Hospital Johns Hopkins Bayview Medical Center Potomac Hospital Sheppard Pratt Health System Greater Baltimore Medical Center Good Samaritan Hospital of Maryland St Joseph Medical Center Carroll Hospital 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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