Electroretinography Center - Concord, NH
Concord 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 Concord * Eye Center of Concord  Eye Center of Concord  Eye Center of Concord  Eye Center of Concord  Eye Center of Concord  Concord Eye Care & Laser Center PC  Concord Eye Care & Laser Center PC  Concord Eye Care & Laser Center PC  Concord Eye Care & Laser Center PC  Concord Eye Care & Laser Center PC  Concord Eye Care & Laser Center PC  Concord Eye Care & Laser Center PC  Bellows Goodman Shaker & Siegal Medical Eye Center  Bellows Goodman Shaker & Siegal Medical Eye Center  Bellows Goodman Shaker & Siegal Medical Eye Center  Bellows Goodman Shaker & Siegal Medical Eye Center  New Hampshire Eye Associates  New Hampshire Eye Associates  New Hampshire Eye Associates  Samuel C Gold MD  Physicians Eye Center  Retina Vision Center  P K Shetty MD  Laconia Eye Associates  Laconia Eye Associates  Spindel Eye & Lasik Associates  Nutfield Eye Associates  Salem Ophthalmology  Nashua Eye Associates PA  Nashua Eye Associates PA  Nashua Eye Associates PA  Nashua Eye Associates PA  Nashua Eye Associates PA  Monadnock Eye Associates  Monadnock Eye Associates  William M Marsh MD  Tallman Eye Associates  Jay B Gooze MD  Eyesight Ophthalmic Services  John S Richards MD PA  Eyesight Ophthalmic Services  Thomas W Bennett MD  Cornea Consultants  Melvyn Damast MD  Northeast Corneal Consultants PA  Eyesight Ophthalmic Services  Eyesight Ophthalmic Services  Seacoast Eyecare  Dartmouth-Hitchcock Medical Center Ophthalmology  Dartmouth-Hitchcock Medical Center Ophthalmology  Dartmouth-Hitchcock Medical Center Ophthalmology  Dartmouth-Hitchcock Medical Center Ophthalmology  Dartmouth-Hitchcock Medical Center Ophthalmology  Dartmouth-Hitchcock Medical Center Ophthalmology  Dartmouth-Hitchcock Medical Center Ophthalmology  Lane Eye Associates & Green Mountain Optical  Ophthalmic Consultants of the Upper Valley  Anthony Iorfino MD  Eye Associates of Northern New England  Eye Associates of Northern New England  Eye Associates of Northern New England  William D Foord MD Concord, New HampshireUpcoming Local Events2012-05-28
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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 Concord
Nearby Concord Hospitals *Concord Hospital New Hampshire Hospital HEALTHSOUTH Rehabilitation Hospital Manchester VA Medical Center Catholic Medical Center Elliot Hospital Franklin Regional Hospital Lakes Region General Hospital Crotched Mountain Rehabilitation Center Parkland Medical Center New London Hospital Frisbie Memorial Hospital Monadnock Community Hospital Hampstead Hospital Huggins Hospital Southern New Hampshire Medical Center St Joseph Hospital Wentworth-Douglass Hospital Exeter 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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