Electroretinography Center - Norfolk, VA
Norfolk 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 Norfolk * Norfolk Eye Physicians  Norfolk Eye Physicians  Crouch & Kilhenny MDs  EVMS Ophthalmology  William K Blaylock MD  Retinal Consultants Inc  The Retina Group of Tidewater PC  Verdi Eye Specialists PLLC  Verdi Eye Specialists PLLC  Glaucoma & Laser Center  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Griffey & Whitelock Eye Specialist  Griffey & Whitelock Eye Specialist  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Atlantic Ophthalmology  Stephanie J Marioneaux MD  Mid Atlantic Eyecare  Virginia Ophthalmology Associates  Virginia Ophthalmology Associates  Mid Atlantic Eyecare  C Allan Henry MD  Virginia Ophthalmology Associates  Virginia Ophthalmology Associates  Mid Atlantic Eyecare  Wagner Macula & Retina Center  Crouch & Kilhenny MDs  Southside Eye Care  Crouch & Kilhenny MDs  Southside Eye Care  Griffey & Whitelock Eye Specialist  Medical & Surgical Eye Specialists  Medical & Surgical Eye Specialists  Medical & Surgical Eye Specialists  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Rey M Francisco MD  Hampton Roads Retina Center  Mitrev Eye Center  Gordon Eye Care  AAPECS PC  The Eye Specialists Ltd  Parbhur Singh MD  Carney Retina & Macula Center  Veterans Affairs Medical Center  Barry Mandell MD  Advanced Vision Institute  Virginia Beach Eye Center PC  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Eyelid & Oculoplastic Consultants  Walter L Taylor Jr. MD  Beach Eye Care  Beach Eye Care  Atlantic Eye Consultants PC  Wagner Macula & Retina Center  First Colonial Eye Center  James River Eye Physicians  TPMG Ophthalmology  Hampton Roads Eye Associates  Hampton Roads Eye Associates  James River Eye Physicians  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Suffolk Eye Associates  Suffolk Eye Associates  Suffolk Eye Physicians & Surgeons  Suffolk Eye Physicians & Surgeons  Kaz Vision & Laser Center  Kaz Vision & Laser Center  Paul J McMenamin MD  Cullom Eye & Laser Center  Cullom Eye & Laser Center  Frank R Romano MD  Gloucester Ophthalmology Associates  Gloucester Ophthalmology Associates  Eastern Shore Eye Center  Old Dominion Eye Care  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 Norfolk, VirginiaNorfolk is an independent city in the Commonwealth of Virginia in the United States.
Norfolk is located at the core of the Hampton Roads metropolitan area, named for the large natural harbor of the same name located at the mouth of Chesapeake Bay. It is one of nine cities and seven counties that constitute the Hampton Roads metro area, officially known as the Virginia Beach-Norfolk-Newport News, VA-NC MSA. The city is bordered to the west by the Elizabeth River and to the north by the Chesapeake Bay. It also shares land borders with the independent cities of Chesapeake to its south and Virginia Beach to its east. One of the oldest of the Seven Cities of Hampton Roads, Norfolk is considered to be the historic, urban, financial, and cultural center of the region.
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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 Norfolk
Nearby Norfolk Hospitals *Children's Hospital of The King's Daughter Harbour Pointe Medical Center & Rehabilitation Center Sentara Norfolk General Hospital Bon Secours Maryview Medical Center Bon Secours DePaul Medical Center Lake Taylor Transitional Care Hospital The Barry Robinson Center Sentara Leigh Hospital Chesapeake General Hospital Sentara Bayside Hospital Riverside Rehabilitation Institute Hampton VA Medical Center Sentara Virginia Beach General Hospital Virginia Beach Psychiatric Center Riverside Behavioral Health Center Sentara CarePlex Hospital Sentara Obici Hospital Riverside Regional Medical Center Mary Immaculate 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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