Electroretinography Center - Edmonds, WA
Edmonds 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 Edmonds * David F Peck MD  Eye Clinic of Edmonds  Edmonds Eye MD  Brian Takagi MD  Retina Consultants of Seattle  Pacific Retina Specialists  Pacific Retina Specialists  Pacific Retina Specialists  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Eye Associates Northwest  Northgate Eye Center  Accredited Eye Center  Northgate Eye Center  Pacific Medical Centers  Pacific Medical Centers  Eye Associates Northwest  Eye Associates Northwest  Puget Sound Eye Care  Bartlett Eye & Laser Clinic  Eye Clinic of University Village  UWMC Cosmetic Surgery Center  UWMC Cosmetic Surgery Center  Cascade Eye MDs  Cascade Eye MDs  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  Group Health Ophthalmology  Group Health Ophthalmology  Seattle Eye MDs  Seattle Eye MDs  Virginia Mason Kirkland  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Pacific Medical Centers  Howard S Barnebey MD  Richard Bensinger MD  Eye Associates Northwest  The Polyclinic Ophthalmology  Eye Associates Northwest  Vitreoretinal Associates  Eye Associates Northwest  Seattle Ophthalmology PLLC  Glaucoma Consultants  Eye Associates Northwest  Allure Laser Center & MediSpa  Kim S Mallick MD  Neuro-Ophthalmic Consultants Northwest  Eye Associates Northwest  The Polyclinic Ophthalmology  Glaucoma Consultants  Vitreoretinal Associates  Eye Associates Northwest  Eye Associates Northwest  Sound Eye & Laser  Walter M Rotkis MD  Vitreoretinal Associates  Allure Laser Center & MediSpa  Eye Associates Northwest  Vitreoretinal Associates  Sheldon J Cowen MD  Eye Associates Northwest  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Washington Pacific Eye Associates  Children's Eye Care PLLC  Northwest Vision Institute  Eye Associates Northwest  Evergreen Eye Care  Everett Clinic Main Campus  Everett Clinic Main Campus  Physicians Eye Clinic  Everett Clinic Main Campus  Medina Eye & Optical  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue Edmonds, WashingtonUpcoming Local Events2012-06-16
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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 Edmonds
Nearby Edmonds Hospitals *Stevens Hospital Northwest Hospital & Medical Center Kindred Hospital Seattle Swedish Medical Center Ballard Campus Fairfax Hospital Children's Hospital & Regional Medical Center Evergreen Hospital Medical Center University of Washington Medical Center Seattle Cancer Care Alliance Group Health Central Hospital Providence Everett Medical Center Pacific Campus Virginia Mason Medical Center Swedish Medical Center First Hill Campus Harborview Medical Center Swedish Medical Center Cherry Hill Campus Providence Everett Medical Center Colby Campus Overlake Hospital Medical Center Group Health Eastside Hospital VA Puget Sound Health Care System Valley General Hospital West Seattle Psychiatric Hospital Harrison Medical Center Schick Shadel Hospital Highline Medical Center Specialty Campus The Regional Hospital for Respiratory & Complex Care Highline Medical Center Main Campus Valley Medical Center Jefferson Healthcare Cascade Valley Hospital Whidbey General Hopital 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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