Electroretinography Center - Olympia, WA
Olympia 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 Olympia * Eye Institute of Olympia Inc PC  Pacific Cataract & Laser  Pacific Cataract & Laser  Leonard B Alenick MD  David R Benson MD  Cheryl M Yokoyama MD  Pacific Northwest Eye Associates  Eye MDs of Puget Sound  Pacific Northwest Eye Associates PS  Pacific Northwest Eye Associates PS  Walter M Rotkis MD  Jonathan C Bahmiller MD  Hsushi Yeh MD  Pacific Northwest Eye Associates PS  Pacific Northwest Eye Associates PS  Pacific Northwest Eye Associates PS  St Marks Eye Institute  Peter B Shelley MD  Kitsap Eye Physicians  Kitsap Eye Physicians  Kitsap Eye Physicians  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Cascade Eye & Skin Centers  Virginia Mason Federal Way  Evergreen Eye Center  Pacific Eye Care  Doctors Clinic  Doctors Clinic  Sound Eye & Laser  West Seattle Eye Clinic  Island Vision  West Seattle Eye Clinic  Robert C Groth MD  Evergreen Eye Center  West Seattle Eye Clinic  West Seattle Eye Clinic  West Seattle Eye Clinic  Pacific Eye Care  Northwest Eye Surgeons PC  Northwest Eye Surgeons PC  Valley Eye & Laser Center  Valley Eye & Laser Center  Valley Eye & Laser Center  Valley Eye & Laser Center  The Eye Center at Valley Medical Center  Eye Associates Northwest  Seattle Eye MDs  Seattle Eye MDs  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  UWMC Cosmetic Surgery Center  Harborview Medical Center Eye Clinic  Harborview Medical Center Eye Clinic  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Virginia Mason Seattle Main  Howard S Barnebey MD  Pacific Medical Centers  Richard Bensinger MD  Eye Associates Northwest  The Polyclinic Ophthalmology  Sheldon J Cowen MD  Eye Associates Northwest  Vitreoretinal Associates  Eye Associates Northwest  Seattle Ophthalmology PLLC  Glaucoma Consultants  Eye Associates Northwest  Pacific Medical Centers  Allure Laser Center & MediSpa  Kim S Mallick MD  Seattle Radiologists PC  Eye Associates Northwest  The Polyclinic Ophthalmology  Glaucoma Consultants  Vitreoretinal Associates  Eye Associates Northwest  Eye Associates Northwest  Pacific Medical Centers  Vitreoretinal Associates  Allure Laser Center & MediSpa  Eye Associates Northwest  Vitreoretinal Associates  Meridian Eye Clinic Olympia, WashingtonUpcoming Local Events2012-05-26
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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 Usher syndrome?Usher syndrome is the most common condition that affects both hearing and vision. A syndrome is a disease or disorder that has more than one feature or symptom. The major symptoms of Usher syndrome are hearing loss and an eye disorder called retinitis pigmentosa, or RP. RP causes night-blindness and a loss of peripheral vision (side vision) through the progressive degeneration of the retina. The retina is a light-sensitive tissue at the back of the eye and is crucial for vision. As RP progresses, the field of vision narrows - a condition known as "tunnel vision" - until only central vision (the ability to see straight ahead) remains. Many people with Usher syndrome also have severe balance problems. There are three clinical types of Usher syndrome:
In the United States, types 1 and 2 are the most common types. Together, they... Other Related Electroretinography ArticlesEmergency Contact for Olympia
Nearby Olympia Hospitals *Providence St Peter Hospital Capital Medical Center Mason General Hospital Mark Reed Hospital Saint Clare Hospital Providence Centralia Hospital Allenmore Hospital Pierce County Human Services St Joseph Medical Center Mary Bridge Children's Hospital & Health Center Tacoma General Hospital Good Samaritan Hospital & Community Healthcare St Francis Hospital 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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Usher Syndrome
- There are three types of Usher (Usher's) syndrome, the most common condition that affects both vision and hearing. The major symptoms of Usher syndrome include retinitis pigmentosa (night-blindness and a loss of peripheral vision), and hearing loss. Usher syndrome is a genetic condition. There is no cure for Usher syndrome.
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Usher Syndrome
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