Electroretinography Center - Everett, WA
Everett 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 Everett * Everett Clinic Main Campus  Everett Clinic Main Campus  Physicians Eye Clinic  Everett Clinic Main Campus  Cascade Eye MDs  Cascade Eye MDs  Edmonds Eye MD  Brian Takagi MD  David F Peck MD  Eye Clinic of Edmonds  Harman Eye Clinic  Harman Eye Clinic  Bartlett Eye & Laser Clinic  Northwest Vision Institute  Evergreen Eye Care  Pacific Medical Centers  Pacific Medical Centers  Virginia Mason Kirkland  Children's Eye Care PLLC  Eye Associates Northwest  Eye Associates Northwest  Eye Associates Northwest  Eye Associates Northwest  Northgate Eye Center  Retina Consultants of Seattle  Pacific Retina Specialists  Pacific Retina Specialists  Accredited Eye Center  Northgate Eye Center  Pacific Retina Specialists  Allure Laser Center & MediSpa  Allure Laser Center & MediSpa  Washington Pacific Eye Associates  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  Group Health Eastside Primary Care Clinic  The Children's Eye Doctors  Eye Clinic of University Village  UWMC Cosmetic Surgery Center  UWMC Cosmetic Surgery Center  Puget Sound Eye Care  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  UWMC Eye Center  Howard S Barnebey MD  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Clinic of Bellevue  Eye Associates Northwest  Eye Associates Northwest  Eastside Eye Consultants  Medina Eye & Optical  Overlake Eyecare PS  Northwest Vision Institute  Group Health Ophthalmology  Group Health Ophthalmology  Pacific Medical Centers  Richard Bensinger MD  Eye Associates Northwest  The Polyclinic Ophthalmology  Vitreoretinal Associates  Seattle Ophthalmology PLLC  Glaucoma Consultants  Eye Associates Northwest  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  Eye Associates Northwest  Vitreoretinal Associates  Seattle Eye MDs  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Seattle Eye MDs  Virginia Mason Seattle Main  Sheldon J Cowen MD  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic Everett, 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 Everett
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