Electroretinography Center - Simi Valley, CA
Simi Valley 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 Simi Valley * Harry Loo MD  Conejo Simi Eye Medical Group  Davidorf Eye Group  Davidorf Eye Group  Marshall M Graditor MD  Retinal Consultants Of Los Angeles  Retinal Consultants Of Los Angeles  Ophthalmology Associates of the Valley  Ophthalmology Associates of the Valley  Michelle Reyes MD  Ophthalmology Associates of the Valley  Ophthalmology Associates of the Valley  Debra G Tennen MD  Kenneth J Arenson MD  Patrick D Keating MD  West Lake Eye & Skin Associates Inc  Darin Eye Center  Darin Eye Center  Bruce B Becker MD  George S Hoffman MD  Khanna Institute of Lasik  Lynn Eye Medical Group  Lynn Eye Medical Group  Retinal Consultants Of Southern California  Lynn Eye Medical Group  Lynn Eye Medical Group  Miramar Eye Specialists  Conejo Simi Eye Medical Group  Conejo Simi Eye Medical Group  Brian R Gross MD  Conejo Simi Eye Medical Group  Conejo Simi Eye Medical Group  Northridge Ophthalmology Associates  Drs Calvin & Calvin  Drs Calvin & Calvin  Sanjay Logani MD  Sanjay Logani MD  Sanjay Logani MD  Leon G Partamian MD  Santa Clarita Valley Eye Center  California Retina Consultants  Chang Shultz & Shultz MDs  Chang Shultz & Shultz MDs  Chang Shultz & Shultz MDs  The Valencia Eye Institute  Gene W Zdenek MD  Eye Institute of Tarzana  Franz Michel MD  Colvard Eye Center  David F Kamin MD  Colvard Eye Center  Colvard Eye Center  Facey Medical Foundation Mission Hills  Facey Medical Foundation Mission Hills  Facey Medical Foundation Mission Hills  Hamni Medical Center  North Valley Eye Medical Group  North Valley Eye Medical Group  Mark A Baskin MD  Valley Retina  Excel Lazer Vision Institute  Sheryl M Handler MD  Ophthalmology Associates of the Valley  Ophthalmology Associates of the Valley  The Eye Center  Bernard Monderer MD  The Eye Center  Valley Eye Center  Valley Eye Center  Glendale Eye Medical Group  DeLaPena Eye Clinic  Panorama City Medical Center  Facey Medical Group Canyon Country  Ventura Eye Institute  Mark R Sawusch MD  Elander Eye Medical Group  Elander Eye Medical Group  Kathryn M Gardner MD  Retina Vitreous Associates  California Eye Consultants  California Eye Consultants  Reingold Eye Center  Reingold Eye Center  Reingold Eye Center  Anthony C Arnold MD  Louis Bernstein MD  Eyesthetica  Jules Stein Eye Institute  Jules Stein Eye Institute  Jules Stein Eye Institute  Eyesthetica  Eyesthetica  Jules Stein Eye Institute  Doris Stein Eye Research Center  Sherwin Isenberg MD  Jules Stein Eye Institute  Jules Stein Eye Institute  Jules Stein Eye Institute  Bartly J Mondino MD  Jules Stein Eye Institute Simi Valley, CaliforniaUpcoming 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 Simi Valley
Nearby Simi Valley Hospitals *Simi Valley Hospital West Hills Hospital & Medical Center Kaiser Permanente Woodland Hills Medical Center Motion Picture & Television Hospital Los Robles Hospital & Medical Center Northridge Hospital Medical Center Henry Mayo Newhall Memorial Hospital Tarzana Regional Medical Center Providence Holy Cross Medical Center Olive View UCLA Medical Center Mission Community Hospital Encino Hospital Medical Center Valley Presbyterian Hospital Kaiser Permanente Panorama City Medical Center Hollywood Community Hospital of Van Nuys St John's Pleasant Valley Hospital Sherman Oaks Hospital Pacifica Hospital of the Valley Ronald Reagan UCLA Medical Center UCLA Neuropsychiatric Hospital Saint John's Health Center Santa Monica UCLA Medical Center Providence Saint Joseph Medical Center Cedars-Sinai Medical Center St John's Regional Medical Center Miracle Mile Medical Center Brotman Medical Center Olympia Medical Center Hollywood Community Hospital Kaiser Permanente West Los Angeles Medical Center Marina Del Rey Hospital VA Greater Los Angeles HealthCare System Kaiser Permanente Los Angeles Medical Center Childrens Hospital Los Angeles Hollywood Presbyterian Medical Center Kindred Hospital Los Angeles Glendale Memorial Hospital & Health Center Temple Community Hospital Shriners Hospitals for Children Los Angeles Los Angeles Metropolitan Medical Center Verdugo Hills Hospital Glendale Adventist Medical Center St Vincent Medical Center Gateways Hospital & Mental Health Center Good Samaritan Hospital Ventura County Medical Center Barlow Respiratory Hospital Community Memorial Hospital California Hospital Medical Center Orthopaedic Medical Center Kaiser Mental Health Center Pacific Alliance Medical Center Centinela Freeman Regional Medical Center Centinela Campus Aurora Vista Del Mar Hospital Ojai Valley Community Hospital White Memorial Medical Center USC Norris Comprehensive Cancer Center LAC + USC Medical Center LAC + USC Medical Center Women's & Children's Hospital USC University Hospital Los Angeles Metropolitan Medical Center Hawthorne Campus Promise Hospital of East Los Angeles Huntington Hospital Community Hospital of Huntington Park 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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