Electroretinography Center - Lodi, CA
Lodi 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 Lodi * Harland Langdon MD  Kaiser Stockton Ophthalmology  Kaiser Permanente Medical Center  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Permanente Medical Center  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Harold Hand MD  Central Valley Eye & Laser Center  Delta Eye Medical Group  Delta Eye Medical Group  Delta Eye Medical Group  Delta Eye Medical Group  Retinal Consultants  Retinal Consultants  Heritage Eye Associates  Heritage Eye Associates  Heritage Eye Associates  Zeiter Eye Clinic  Zeiter Eye Clinic  Zeiter Eye Clinic  Zeiter Eye Clinic  Sierra Eye Care  Royo Eye and Laser Center  Sierra Eye Care  Barbara J Arnold MD Inc  Delta Eye Medical Group  Jordan M Usunov MD  Tracy Eye Care Medical Clinic  Mather VA Eye Clinic  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Davis Medical Group Dept of Ophthalmology  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Health Care Systems  UC Davis Medical Group Dept of Ophthalmology  Crosson Eye Medical Clinic  Phillip L Levy MD  Hillis L Warren MD  Griffin & Reed Eye Care  Griffin & Reed Eye Care  Griffin & Reed Eye Care  Eye Site Sacramento Medical Group  Eye Site Sacramento Medical Group  Retinal Consultants  Retinal Consultants  California Eye Clinic  California Eye Clinic  California Eye Clinic  Children's Hospital Oakland  Retinal Consultants  James M Reece Jr. MD  Retinal Consultants  Denise Satterfield MD  Medical Vision Technology  Medical Vision Technology  Medical Vision Technology  Michael J Schermer MD Inc  Medical Vision Technology  Mercy Medical Group Ophthalmology  Center For Sight  H Douglas Cooper MD  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Kaiser Permanente Medical Group  Richard D Grutzmacher MD  Richard D Grutzmacher MD  Sylvan Eye Associates  Sutter Gould Medical Foundation Eye Care Center  Sylvan Eye Associates  Sutter Gould Medical Foundation Eye Care Center  Sylvan Eye Associates  Sutter Gould Medical Foundation Eye Care Center  Michael S Jedrzynski MD  Mercy Medical Group Ophthalmology  David W Ottman MD Lodi, CaliforniaUpcoming Local Events2012-06-16
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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 Lodi
Nearby Lodi Hospitals *Lodi Memorial Hospital Lodi Memorial Hospital West St Joseph's Behavioral Health Center St Joseph's Medical Center Dameron Hospital San Joaquin General Hospital Kaiser Permanente Hospital Manteca Doctors Hospital of Manteca Methodist Hospital of Sacramento Sierra Vista Hospital Kaiser Permanente South Sacramento Medical Center Sutter Tracy Community Hospital Sutter Center for Psychiatry Sacramento VA Medical Center Sutter Delta Medical Center Shriners Hospital Northern California UC Davis Medical Center Sutter Memorial Hospital Mercy General Hospital Sutter Amador Hospital Sutter General Hospital Kaiser Permanente Sacramento Medical Center Oak Valley 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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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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Usher Syndrome
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