Electroretinography Center - Johns Creek, GA
Johns Creek 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 Johns Creek * Tucker & Associates Eyecare & Laser Center  Julie Ann Galbreath-Wolf OD  William Segal MD  Milan Eye Center  Thomas Eye Group PC  Thomas Eye Group PC  Lotus Vision  Chen Eye Center  North Fulton Eye Center  North Fulton Eye Center  North Fulton Eye Center  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Pediatric Eye Care  Robert L Hendley MD  Atlanta Oculus Cosmetic Surgeons  Georgia Retina PC  Georgia Retina PC  Henry A Magnant MD PC  James H Dew Jr. MD  Paul J Glass MD  Georgia Eye Associates  Haywood Eye & Vision Care  Georgia Eye Associates  Georgia Retina PC  Wolfson Eye Institute  Wolfson Eye Institute  Woolfson Eye Institute  Eye Physicians & Surgeons PC  Gary A Beldick MD  Eye Physicians & Surgeons PC  Eye Physicians & Surgeons PC  Eye Physicians & Surgeons PC  Eye Physicians & Surgeons PC  Eye Physicians & Surgeons PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Thomas Eye Group PC  Georgia Eye Partners  Georgia Eye Partners  Georgia Retina PC  Georgia Retina PC  Georgia Retina PC  Eye Consultants of Atlanta  Eye Consultants of Atlanta  Eye Consultants of Atlanta  Edwin H Donnelly MD  Terry W Taylor MD  Atlanta Oculus Cosmetic Surgeons  The Eye Services  Northlake Eye Center  The Eye Services  Atlanta Oculus Cosmetic Surgeons  West Paces Omni Eye Services  Advanced Vision PC  Georgia Ophthalmology Associates  Georgia Ophthalmology Associates  Vision Institute  Atlanta Ophthalmology Associates PC  Atlanta Ophthalmology Associates PC  Atlanta Ophthalmology Associates PC  Marietta Eye Clinic PA  Marietta Eye Clinic PA  Carlin Vision  Carlin Vision  Carlin Vision  Mark J Safra MD  Eye Physicians & Surgeons PC  Eye Physicians & Surgeons PC  Georgia Retina PC  Georgia Retina PC  Georgia Eye Associates  Georgia Eye Associates  James W Alexander MD  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Emory Eye Center  Currell V Berry MD Johns Creek, GeorgiaUpcoming Local Events2012-06-09
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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 Johns Creek
Nearby Johns Creek Hospitals *Gwinnett Medical Center Duluth Glancy Rehabilitation Center Emory Johns Creek Hospital North Fulton Regional Hospital Peachford Behavioral Health System of Atlanta Gwinnett Medical Center Northside Hospital Forsyth Saint Joseph's Hospital of Atlanta Children's Healthcare at Scottish Rite Northside Hospital SummitRidge Center for Psychiatry & Addiction Medicine Emory Eastside Medical Center Atlanta VA Medical Center DeKalb Medical Center Wesley Woods Geriatric Hospital Children's Healthcare at Egleston Emory University Hospital DeKalb Medical Wellstar Windy Hill Hospital Hillside Hospital Laurel Heights Hospital Piedmont Hospital Shepherd Center Kindred Hospital Atlanta Emory University Hospital Midtown Select Specialty Hospital Atlanta Atlanta Medical Center Wellstar Kennestone Hospital DeKalb Medical Center at Hillandale Grady Health System Emory Adventist Hospital Ridgeview Institute Georgia Regional Hospital at Atlanta Northside Hospital Cherokee Devereux Georgia Treatment Network Rockdale Medical Center Wellstar Cobb Hospital Regency Hospital of South Atlanta South Fulton Medical Center Barrow Regional Medical Center Northeast Georgia Medical Center Northeast Georgia Medical Center Lanier Park Campus Walton Regional Medical Center Anchor Hospital Piedmont Mountainside Hospital Southern Regional Medical Center Newton Medical Center 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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