Electroretinography Center - Hoover, AL
Hoover 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 Hoover * Michael R Bernstein MD  Carter Feagin Lawaczeck & McKinnon MDs  Carter Feagin Lawaczeck & McKinnon MDs  Carter Feagin Lawaczeck & McKinnon MDs  Glaucoma Consultants of Alabama  Carter Feagin Lawaczeck & McKinnon MDs  Glaucoma Consultants of Alabama  Glaucoma Consultants of Alabama  Carter Feagin Lawaczeck & McKinnon MDs  VisionFirst Eye Center  VisionFirst Eye Center  Vision America  Vision America  Vision America  Vision America  Vision America  Vision America  Vision America  Roswell R Pfister MD  Brookwood Ophthalmology  Norwood Clinic Ophthalmology  Laser Center  Retina Specialists of Alabama  Alabama Eye & Cataract Center PC  Retina Specialists of Alabama  Retina Specialists of Alabama  Christopher L Kelly MD  David A Skier MD  Joseph Zarzaur MD  C Michael Adams MD  Alabama Ophthalmology Associates  Alabama Ophthalmology Associates  Alabama Ophthalmology Associates  Alabama Ophthalmology Associates  Alabama Ophthalmology Associates  Retina Consultants of Alabama  UAB Department of Ophthalmology  Michael A Callahan MD & Associates  UAB Department of Ophthalmology  UAB Department of Ophthalmology  Retina Consultants of Alabama  UAB Department of Ophthalmology  Harold A Helms MD PhD  UAB Department of Ophthalmology  Glaucoma Consultants of Alabama  Retina Consultants of Alabama  John Parker MD  UAB Department of Ophthalmology  Retina Consultants of Alabama  UAB Department of Ophthalmology  UAB Department of Ophthalmology  Retina Consultants of Alabama  UAB Department of Ophthalmology  Retina Consultants of Alabama  UAB Department of Ophthalmology  UAB Department of Ophthalmology  Retina Consultants of Alabama  Alabama Eye Surgery PC  Simon Williamson Clinic PC  Thomas M Allison MD  Bry A Coburn MD  Susan H Eiland MD PC  Alabama Vision Center LLC  J Randall Pitts MD  Darrell S Prestridge DO  Song Eye Center PC  Opthalmology Associates PC  Birmingham Eye Center  James M Lewis MD  Quality Care for Kids  Rita J Armitage MD  Eastern Medical Eye Center PC  Eastern Medical Eye Center PC  Eastern Medical Eye Center PC  James Blackstone MD  Walker Baptist Medical Center  Tuscaloosa Ophthalmology  Tuscaloosa Ophthalmology  Alabama Eye Clinic  Khalid L Khan MD  Office of Drs Yeargan & Sputh  Office of Drs Yeargan & Sputh  Terry L Dawson MD  William E Holcomb & Associates  Vision America  Eye Associates  Eye Associates  Michael McIntyre MD  Wyatt-Kirkpatrick Eye Associates  Gadsden Eye Clinic  Gadsden Eye Clinic  Gadsden Eye Clinic  Khalid L Khan MD  East Alabama Eye Clinic  East Alabama Eye Clinic  East Alabama Eye Clinic  Michael A McEwen MD  Itec  Itec  Itec Hoover, AlabamaUpcoming 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 Hoover
Nearby Hoover Hospitals *Brookwood Medical Center HEALTHSOUTH Lakeshore Rehabilitation Hospital St Vincent's Hospital UAB Highlands Hospital Callahan Eye Foundation Hospital Children's Hospital Cooper Green Hospital Princeton Baptist UAB Hospital Birmingham VA Medical Center Trinity Medical Center UAB Medical West Shelby Baptist Medical Center Hill Crest Behavioral Health Services St Vincent's East Bradford Health Services St Vincent's St Clair 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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