Electroretinography Center - San Antonio, TX
San Antonio 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 San Antonio * Dr Richard A Keh PA  Medical Center Ophthalmology Associates  Retina Associates of South Texas PA  Medical Center Ophthalmology Associates  Medical Center Ophthalmology Associates  Medical Center Ophthalmology Associates  Retina Associates of South Texas PA  Roberto San Martin MD  Medical Center Ophthalmology Associates  James W Speights MD PA  Ophthalmology Associates San Antonio  Ophthalmology Associates San Antonio  Joe B Frey MD  Ophthalmology Associates San Antonio  Ophthalmology Associates San Antonio  Ophthalmology Associates San Antonio  Ophthalmology Associates San Antonio  Ophthalmology Associates San Antonio  Harrison Bowes MD  Thomas Coronado MD  Peter J Speicher MD  John Y Harper Jr. MD  Robert N Jones MD  James L Mims III  W Darrell Willerson Jr. MD  Center For Corrective Eye Surgery  Alamo Ophthalmology Center  Alamo Ophthalmology Center  W Darrell Willerson Jr. MD  San Antonio Eye Center  San Antonio Eye Center  San Antonio Eye Center  San Antonio Eye Center  Braverman Terry & Oei Eye Associates  Braverman Terry & Oei Eye Associates  Braverman Terry & Oei Eye Associates  Braverman Terry & Oei Eye Associates  Braverman Terry & Oei Eye Associates  Mary H Arno MD  UT Medicine San Antonio  Bellevue Eye Center  Washington Tom Lee MD  Eye Clinics of South Texas PA  David G Shulman MD PA  David G Shulman MD PA  Focal Point Vision  Richard A Rodriguez MD  Patrick S O'Connor MD  Patrick S O'Connor MD  Children's Eye Center  David I Tasker MD  Kozlovsky Delay Winter Eye Consultants LLC  Kozlovsky Delay Winter Eye Consultants LLC  Donald K Sanford MD  Donald Adams MD  Eye Associates  Eye Associates  George M Lowry MD  John F Saunders MD  Joel Z Taylor MD  Samuel J Pierce MD  UT Medicine Eye Consultants  UT Medicine Eye Consultants  UT Medicine Eye Consultants  UT Medicine Eye Consultants  Donald A Hollsten MD  UT Medicine Eye Consultants  UT Medicine Eye Consultants  UT Medicine Eye Consultants  UT Medicine Eye Consultants  UT Medicine Eye Consultants  UT Medicine San Antonio  UT Medicine Eye Consultants  South Texas Eye Institute  South Texas Eye Institute  Pediatric Opthalmalogy  Focal Point Vision  Focal Point Vision  Focal Point Vision  David E Holck MD  Jane Lindell Hughes MD FAACS Ophthalmology & Ophthalmic Surgery  Medical Center Ophthalmology Associates  Retinal Consultants of San Antonio  Medical Center Ophthalmology Associates  Medical Center Eye Institute  Miriam J Friedman MD  Retinal Consultants of San Antonio  David K Scales MD  Medical Center Ophthalmology Associates  Martha C Wilson MD  Lynnell C Lowry MD  Wendall C Bauman Jr. MD  Alamo City Eye  Alamo City Eye  Alamo City Eye  Alamo City Eye  Stone Oak Ophthamology  Stone Oak Ophthamology  North Central Ophthalmology  Nader G Iskander MD San Antonio, TexasSan Antonio has a strong military presence - it is home to Fort Sam Houston, Lackland Air Force Base, Randolph Air Force Base, and Brooks City-Base, with Camp Bullis and Camp Stanley outside the city. Kelly Air Force Base operated out of San Antonio until 2001, when the airfield was transferred over to Lackland AFB and the remaining portions of the base became Port San Antonio, an industrial/business park. San Antonio is home to five Fortune 500 companies and to the South Texas Medical Center, the only medical research and care provider in the South Texas region. Upcoming 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 San Antonio
Nearby San Antonio Hospitals *CHRISTUS Santa Rosa City Centre & Children's Hospital Nix Medical Center Baptist Medical Center Select Specialty Hospital San Antonio Metropolitan Methodist Hospital TexSAn Heart Hospital San Antonio State Hospital Texas Center for Infectious Disease Promise Hospital of San Antonio Southwest General Hospital Southeast Baptist Hospital Nix Specialty Health Center Texas Specialty Hospital Methodist Children's Hospital of South Texas Methodist Hospital Northeast Baptist Hospital University Health System San Antonio Kindred Hospital San Antonio South Texas VA Healthcare System St Luke's Baptist Hospital Warm Springs San Antonio Rehabilitation Hospital Methodist Specialty & Transplant Hospital Wilford Hall Medical Center Southwest Mental Health Center CHRISTUS Santa Rosa Medical Center CHRISTUS Santa Rosa Rehabilitation Hospital HEALTHSOUTH Rehabilitation Institute of San Antonio LifeCare Hospitals of San Antonio Methodist Ambulatory Surgery Hospital Northwest COMPASS Hospital at San Antonio Mission Vista Behavioral Health Center Northeast Methodist Hospital Laurel Ridge Treatment Center Spine Hospital of South Texas North Central Baptist Hospital Connally Memorial Medical Center Christus Santa Rosa New Braunfels South Texas Regional Medical Center Guadalupe Regional Medical Center 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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