Electroretinography Center - Portsmouth, VA
Portsmouth 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 Portsmouth * Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Tidewater Eye Centers PC  Southside Eye Care  Southside Eye Care  William K Blaylock MD  Retinal Consultants Inc  The Retina Group of Tidewater PC  EVMS Ophthalmology  Crouch & Kilhenny MDs  Verdi Eye Specialists PLLC  Verdi Eye Specialists PLLC  Glaucoma & Laser Center  Norfolk Eye Physicians  Norfolk Eye Physicians  Griffey & Whitelock Eye Specialist  Griffey & Whitelock Eye Specialist  Atlantic Ophthalmology  C Allan Henry MD  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Virginia Eye Consultants  Stephanie J Marioneaux MD  Medical & Surgical Eye Specialists  Medical & Surgical Eye Specialists  Mid Atlantic Eyecare  Mid Atlantic Eyecare  Veterans Affairs Medical Center  Mid Atlantic Eyecare  Crouch & Kilhenny MDs  Virginia Ophthalmology Associates  Virginia Ophthalmology Associates  Crouch & Kilhenny MDs  Virginia Ophthalmology Associates  Virginia Ophthalmology Associates  Wagner Macula & Retina Center  Griffey & Whitelock Eye Specialist  Medical & Surgical Eye Specialists  Gordon Eye Care  Hampton Roads Retina Center  Mitrev Eye Center  Rey M Francisco MD  Advanced Vision Institute  Hampton Roads Eye Associates  Hampton Roads Eye Associates  AAPECS PC  The Eye Specialists Ltd  Parbhur Singh MD  Carney Retina & Macula Center  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Hampton Roads Eye Associates  James River Eye Physicians  James River Eye Physicians  Suffolk Eye Associates  Suffolk 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  Hampton Roads Eye Associates  Hampton Roads Eye Associates  Suffolk Eye Physicians & Surgeons  Suffolk Eye Physicians & Surgeons  Barry Mandell MD  Virginia Beach Eye Center PC  Kaz Vision & Laser Center  Kaz Vision & Laser Center  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  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 Portsmouth, 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 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 Portsmouth
Nearby Portsmouth Hospitals *Bon Secours Maryview Medical Center Sentara Norfolk General Hospital Children's Hospital of The King's Daughter Harbour Pointe Medical Center & Rehabilitation Center Bon Secours DePaul Medical Center Lake Taylor Transitional Care Hospital Riverside Rehabilitation Institute Sentara Leigh Hospital The Barry Robinson Center Chesapeake General Hospital Hampton VA Medical Center Sentara Bayside Hospital Riverside Behavioral Health Center Sentara Obici Hospital Sentara CarePlex Hospital Riverside Regional Medical Center Sentara Virginia Beach General Hospital Virginia Beach Psychiatric Center Mary Immaculate 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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