Electroretinography Center - Perris, CA
Perris 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 Perris * Inland Valley Retina Medical Associates Inc  LoBue Laser & Eye Medical Center  Retina Consultants of Southern California  Retina Consultants of Southern California  Riverside Medical Clinic  Riverside Medical Clinic  David R McGrew MD  Riverside Eye Specialists  Doheny Eye Center  Riverside Eye Specialists  Riverside Eye Specialists  Doheny Eye Center  Pabalan Eye Center  Donald Shearer MD  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  LLUHC Ophthalmology  Hemet Eye Medical & Surgical Center  Beaver Medical Group Redlands  Beaver Medical Group Redlands  Beaver Medical Group Redlands  Inland Eye Institute  Inland Eye Institute  Inland Eye Institute  California Eye Professionals  California Eye Professionals  Inland Valley Retina Medical Associates Inc  Khanna Institute of Lasik  Inland Valley Retina Medical Associates Inc  A M Palanca-Capistrano MD Inc  Tri-County Eye Institute  Robert S Herrick MD  Eye Center  Edward J Puttre MD  Fallbrook Eye Surgery  Atlantis Eyecare  Atlantis Eyecare  Jan S Lukac MD  Eye Associates of Orange County  Eye Associates of Orange County  Advanced Eye Medical Group  Advanced Eye Medical Group  David Gwynn MD  Sheldon Nankin MD  David Gwynn MD  Orange County Retina Medical Group  Retina Associates of Orange County  Retina Associates of Orange County  Orange County Retina Medical Group  M Polly McKinstry MD  Jude J Santiago MD  John Cheng MD  Henry Cheng MD  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  Harvard Eye Associates  William L McCarthy Jr. MD Inc  Harvard Eye Associates  Harvard Eye Associates  Pacific Eye Institute  Pacific Eye Institute  Tayani Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Pacific Eye Institute  Carl S Shibata MD  Pacific Eye Institute  Tayani Eye Institute  Childrens Eye Institute  Robert A Innocenzi MD  Childrens Eye Institute  Shahla Abedi MD Inc  Shahla Abedi MD Inc  South Coast Eye Care Centers  South Coast Eye Care Centers  South Coast Eye Care Centers  South Coast Eye Care Centers  Eye Center of Orange County  Eye Center of Orange County  Pacific Summit Eye Medical Center  Arthur D Charap MD  Irvine Eye Physicians and Surgeons Inc  Irvine Eye Physicians and Surgeons Inc  Howard Conn MD Inc  Jayne N Ge MD  Marjorie A Mosier MD  John D Zdral MD John Esser MD  V Wechter MD Inc  Claremont Eye Associates  Claremont Eye Associates  Claremont Eye Associates  Lakeside Vision Center  Lakeside Vision Center  Daniel C Kline MD Inc Perris, CaliforniaUpcoming 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 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 Perris
Nearby Perris Hospitals *Vista Hospital of Riverside Menifee Valley Medical Center Moreno Valley Community Hospital Riverside County Regional Medical Center Inland Valley Medical Center Hemet Valley Medical Center Parkview Community Hospital Medical Center Rancho Springs Medical Center Riverside Community Hospital Kaiser Permanente Riverside Medical Center Redlands Community Hospital Loma Linda University Behavioral Medicine Center Loma Linda University Medical Center East Campus Loma Linda University Children's Hospital Loma Linda University Medical Center VA Loma Linda Healthcare System San Gorgonio Memorial Hospital Corona Regional Medical Center Rehabilitation Corona Regional Medical Center Arrowhead Regional Medical Center Kaiser Permanente Fontana Medical Center Patton State Hospital Robert H Ballard Rehabilitation Hospital St Bernardine Medical Center Community Hospital of San Bernardino Fallbrook Hospital Children's Hospital of Orange County at Mission Mission Hospital Rancho Specialty Hospital Saddleback Memorial Medical Center Laguna Hills Kindred Hospital Ontario Chino Valley Medical Center San Antonio Community Hospital Kaiser Permanente Orange County Irvine Medical Center Saddleback Memorial Medical Center San Clemente Mountains Community Hospital Montclair Hospital Medical Center Kaiser Permanente Anaheim Medical Center Chapman Medical Center HEALTHSOUTH Tustin Rehabilitation Hospital Tustin Hospital & Medical Center HealthBridge Children's Rehabilitation Hospital Western Medical Center Santa Ana 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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