Electroretinography Center - Portage, MI
Portage 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 Portage * Kalamazoo Ophthalmology PC  Kalamazoo Ophthalmology PC  Healthcare Midwest Ophthalmology & ENT  Sassaman Singer Eye Center PC  Sassaman Singer Eye Center PC  Paragon Health PC  Paragon Health PC  Paragon Health PC  Advanced Vision Care PC  Eye Care Physicians & Surgeons PC  Midwest Eye Care PC  Midwest Eye Care PC  Southwest Michigan Eye Center  Southwest Michigan Eye Center  Southwest Michigan Eye Center  James L Keller MD  Parial Eye Physicians  Parial Eye Physicians  Eye & ENT Specialists PC  Eye & ENT Specialists PC  Eye & ENT Specialists PC  Advanced Eye Care  Holicki Eye Center  South Michigan Ophthalmology  South Michigan Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Great Lakes Eye Care  Great Lakes Eye Care  Great Lakes Eye Care  Great Lakes Eye Care  Great Lakes Eye Care  Great Lakes Eye Care  Grand Rapids Eye Institute  Michigan Medical PC Ophthalmology  Bruce D Dragoo MD PC  David M Reifler MD  Verdier Eye Center PC  Verdier Eye Center PC  Verdier Eye Center PC  Sight Eye Clinic  Sight Eye Clinic  Sight Eye Clinic  Pediatric Ophthalmology PC  Associates Retinal Consultants PC  Associates Retinal Consultants PC  Harrison Eye Center  Mark O Moleski MD  Holland Eye Surgery & Laser Center  Richard Benninger MD  Michael J Crawford MD  Holland Eye Surgery & Laser Center  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Grand Rapids Ophthalmology  Glaucoma Eye Center PC  Thomas J Jennings MD  Gossage Eye Institute  Gossage Eye Institute  Shoreline Ophthalmology PC  Shoreline Ophthalmology PC  The Center For Sight  The Center For Sight  Bruce A Klunzinger MD  TLC Eye Care & Laser Centers  TLC Eye Care & Laser Centers  TLC Eye Care & Laser Centers  TLC Eye Care & Laser Centers  TLC Eye Care & Laser Centers  Parkside Eye Clinic  Shoreline Ophthalmology PC  Shoreline Ophthalmology PC  Shoreline Ophthalmology PC  Shoreline Ophthalmology PC  Shoreline Ophthalmology PC  Rosenbaum Eye & Laser Center  Rosenbaum Eye & Laser Center  Crew Eye Center  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Lansing Ophthalmology  Evans Eye Center  Giora Adam MD  Michigan Eye Care Specialists  Michigan Eye Care Specialists  MSU Medical Specialties  MSU Medical Specialties  MSU Medical Specialties Portage, MichiganUpcoming Local Events2012-06-02
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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 Portage
Nearby Portage Hospitals *Kalamazoo Psychiatric Hospital Bronson Vicksburg Hospital Bronson Methodist Hospital Borgess Medical Center Three Rivers Health Bronson LakeView Hospital Borgess Pipp Hospital Battle Creek VA Medical Center Fieldstone Center Battle Creek Health System Southwest Regional Rehabilitation Center Allegan General Hospital Sturgis Hospital Borgess Lee Memorial Hospital Oaklawn Hospital Community Hospital Watervliet Pennock 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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