Electroretinography Center - Alhambra, CA
Alhambra 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 Alhambra * Dik Cheung MD  Quon Medical Center  Mitchell Latter MD Inc  Grace Liu MD  Chang Eye Clinic  William Ko MD  San Gabriel Eye Associates  San Gabriel Eye Associates  Ted Wei MD  Kevin T Wong MD  Kevin T Wong MD  Lo Medical Group  Agape Eye Associates  Retina Eye Specialists  Calvin T Eng MD  Paul T Urrea MD  Vitreo-Retinal Associates  Vitreo-Retinal Associates  Southern California Glaucoma Consultants  Ophthalmology Corporation  Pasadena Eye Medical Group  Eyesthetica  Jeffrey C Hong MD  Marta L Mora MD  Pasadena Eye Medical Group  Pasadena Eye Medical Group  Pasadena Eye Medical Group  Roger Chan MD  Almira Cann MD  California Eye Specialists  Michael J Miller MD  Karen Morgan MD  California Eye Specialists  California Eye Specialists  Foothill Eye Surgical Center  Warren C Stout MD  Warren C Stout MD  Dai Le Tran MD  OIC Eye Group  Alice Song MD Corp  Children's Retina Institute  De La Pena Eye Clinic  Arcadia Eye Center  Doheny Eye Center Arcadia  Nazareth E Darakjian MD  Doheny Eye Center Arcadia  Doheny Eye Center Arcadia  Doheny Eye Institute Los Angeles  Doheny Eye Institute Los Angeles  Doheny Eye Institute Los Angeles  Doheny Eye Institute Los Angeles  Children's Hospital Los Angeles Ophthalmology  Stephen J Ryan MD  Doheny Eye Institute Los Angeles  Doheny Eye Institute Los Angeles  Ronald E Smith MD  Doheny Eye Institute Los Angeles  Doheny Eye Institute Los Angeles  Doheny Eye Institute Los Angeles  Phillips Eye Center  Kurwa Eye Center  Phillips Eye Center  Montebello Eye Center  Montebello Eye Center  White Memorial Medical Center  El Monte Eye Clinic  Randolph J Falk MD  Carl J Gordon MD  R Philip Doss MD  Thomas Smith MD  Hill Eye Center  NuVision Laser  Tsuyoshi Yamashita MD  Albert Baktanian MD  Vision Care Medical Group  Casimiro Gonzalez MD  Vision Care Medical Group  Sahag A Baghdassarian MD  Sahag A Baghdassarian MD  Carl S Shibata MD  Glen Jarus MD  Beeve Vision Care Center  Beeve Vision Care Center  Retina Vitreous Associates  Retina Vitreous Associates  Specialty Eye Care Medical Center Inc  Jeffrey Nilles MD  Retina Vitreous Associates  Theodore B Okie MD  Jeffrey Nilles MD  Retina Vitreous Associates  Harold E Reaves MD  Jeffrey Sage DO  Verdugo Eye Care  Laser Eye Center  Ocular Surgery Medical Associates  Glendale Eye Medical Group  Glendale Eye Medical Group  Glendale Eye Medical Group  Glendale Eye Medical Group Alhambra, 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 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 Alhambra
Nearby Alhambra Hospitals *Alhambra Hospital Medical Center San Gabriel Valley Medical Center Garfield Medical Center City of Angels Medical Center Ingleside Campus Monterey Park Hospital Huntington Hospital BHC Alhambra Hospital Aurora Las Encinas Hospital USC University Hospital USC Norris Comprehensive Cancer Center LAC + USC Medical Center LAC + USC Medical Center Women's & Children's Hospital Beverly Hospital Methodist Hospital East Los Angeles Doctors Hospital Greater El Monte Community Hospital White Memorial Medical Center Promise Hospital of East Los Angeles Los Angeles Community Hospital Pacific Alliance Medical Center Kaiser Mental Health Center Barlow Respiratory Hospital Glendale Adventist Medical Center Gateways Hospital & Mental Health Center Glendale Memorial Hospital & Health Center Good Samaritan Hospital Kaiser Permanente Medical Center Baldwin Park St Vincent Medical Center California Hospital Medical Center Temple Community Hospital City of Hope National Medical Center Community Hospital of Huntington Park Verdugo Hills Hospital Shriners Hospitals for Children Los Angeles Vista Specialty Hospital of San Gabriel Valley Childrens Hospital Los Angeles Hollywood Presbyterian Medical Center Kaiser Permanente Los Angeles Medical Center Orthopaedic Medical Center Presbyterian Intercommunity Hospital Doctor's Hospital West Covina Citrus Valley Medical Center Queen of the Valley Campus Downey Regional Medical Center Los Angeles Metropolitan Medical Center Hollywood Community Hospital Rancho Los Amigos National Rehabilitation Center Kindred Hospital San Gabriel Valley St Francis Medical Center Whittier Hospital Medical Center Kaiser Permanente Downey Medical Center Providence Saint Joseph Medical Center VA Greater Los Angeles HealthCare System Metropolitan State Hospital Coast Plaza Doctors Hospital Norwalk Community Hospital Citrus Valley Medical Center Inter Community Campus Martin Luther King Jr MAC Service Center Olympia Medical Center Miracle Mile Medical Center Kindred Hospital La Mirada Cedars-Sinai Medical Center College Hospital Cerritos Promise Hospital of East Los Angeles Suburban Medical Center Campus Kaiser Permanente West Los Angeles Medical Center Foothill Presbyterian Hospital Aurora Charter Oak Hospital Bellflower Medical Center East Valley Hospital Medical Center Kindred Hospital Los Angeles Centinela Freeman Regional Medical Center Centinela Campus Brotman Medical Center Lakewood Regional Medical Center San Dimas Community Hospital Memorial Hospital of Gardena Vista Hospital of South Bay 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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