Electroretinography Center - Newport News, VA
Newport News 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 Newport News * Retinal Consultants Inc  The Retina Group of Tidewater PC  Virginia Eye Consultants  Virginia Eye Consultants  Wagner Macula & Retina Center  Advanced Vision Institute  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Veterans Affairs Medical Center  James River Eye Physicians  James River Eye Physicians  Hampton Roads Eye Associates  Hampton Roads Eye Associates  TPMG Ophthalmology  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Southside Eye Care  Southside Eye Care  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Kaz Vision & Laser Center  Glaucoma & Laser Center  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Kaz Vision & Laser Center  Griffey & Whitelock Eye Specialist  Griffey & Whitelock Eye Specialist  William K Blaylock MD  EVMS Ophthalmology  Crouch & Kilhenny MDs  Verdi Eye Specialists PLLC  Verdi Eye Specialists PLLC  Suffolk Eye Associates  Norfolk Eye Physicians  Norfolk Eye Physicians  C Allan Henry MD  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Mid Atlantic Eyecare  Virginia Ophthalmology Associates  Virginia Ophthalmology Associates  Mid Atlantic Eyecare  Virginia Ophthalmology Associates  Suffolk Eye Associates  Virginia Ophthalmology Associates  Mid Atlantic Eyecare  Crouch & Kilhenny MDs  Crouch & Kilhenny MDs  Griffey & Whitelock Eye Specialist  Suffolk Eye Physicians & Surgeons  Suffolk Eye Physicians & Surgeons  Medical & Surgical Eye Specialists  Medical & Surgical Eye Specialists  Atlantic Ophthalmology  Medical & Surgical Eye Specialists  Stephanie J Marioneaux MD  Rey M Francisco MD  Parbhur Singh MD  The Eye Specialists Ltd  Gordon Eye Care  Hampton Roads Retina Center  AAPECS PC  Mitrev Eye Center  Carney Retina & Macula Center  Barry Mandell MD  Virginia Beach Eye Center PC  Paul J McMenamin MD  Beach Eye Care  Eyelid & Oculoplastic Consultants  Beach Eye Care  Walter L Taylor Jr. MD  Cullom Eye & Laser Center  Atlantic Eye Consultants PC  Cullom Eye & Laser Center  Wagner Macula & Retina Center  First Colonial Eye Center  Gloucester Ophthalmology Associates  Gloucester Ophthalmology Associates  Frank R Romano MD  Old Dominion Eye Care  Eastern Shore Eye Center  Robert W Jacey MD  Virginia Eye Institute  Willis M Madden MD  Virginia Eye Institute  Virginia Eye Institute  Virginia Eye Institute  Retina Institute of Virginia  Commonwealth Eye Care Associates Newport News, VirginiaUpcoming Local Events2012-06-03
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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 Newport News
Nearby Newport News Hospitals *Riverside Rehabilitation Institute Riverside Behavioral Health Center Sentara CarePlex Hospital Hampton VA Medical Center Riverside Regional Medical Center Bon Secours DePaul Medical Center Harbour Pointe Medical Center & Rehabilitation Center Sentara Norfolk General Hospital Children's Hospital of The King's Daughter Bon Secours Maryview Medical Center Mary Immaculate Hospital Lake Taylor Transitional Care Hospital Sentara Leigh Hospital The Barry Robinson Center Sentara Obici Hospital Sentara Bayside Hospital Chesapeake General Hospital Sentara Virginia Beach General Hospital Virginia Beach Psychiatric Center Eastern State Hospital Sentara Williamsburg Regional Medical Center Riverside Walter Reed Hospital Southampton Memorial 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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