Electroretinography Center - Terre Haute, IN
Terre Haute 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 Terre Haute * David Wesley Boone MD  A P & S Clinic  A P & S Eye Center  A P & S Clinic  Indiana Eye Specialists  Indiana Eye Specialists  Crawfordsville Eye Clinic  Midwest Cataract Center  Wabash Valley Eye Center  Daviess Community Hospital  Ophthalmology Associates of Bloomington  Ophthalmology Associates of Bloomington  Matthew M Fornefeld MD  Eye Center of Southern Indiana  Eye Center of Southern Indiana  Drs Goodell & Zauel  Drs Goodell & Zauel  Indiana Eye Clinic  Indiana Eye Clinic  Williamson Eye Institute  Williamson Eye Institute  Williamson Eye Institute  Whitson Vision PC  Whitson Vision PC  Gary E Schraut MD  Daniel R Whipple MD  Daniel R Whipple MD  Thomas Paul Mattingly MD  Marc A Jones MD  Rodney B Kusumi MD  Jason M Burgett  Clarian Arnett Clinic North Lafayette  Clarian Arnett Clinic North Lafayette  Paul R Honan MD  The Eye Center  Norman D Radtke MD  Stephen J Massicotte MD PC  Abrams Eyecare Associates  Abrams Eyecare Associates  Abrams Eyecare Associates  Thierry H Wilbrandt MD  20/20 Eye Physicians of Indiana PC  20/20 Eye Physicians of Indiana PC  Midwest Eye Institute  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Hua Gao MD  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  David A Plager MD  David A Plager MD  Center for Sight  Center for Sight  I U Eye Care  Southside Eye Associates  20/20 Eye Physicians of Indiana PC  20/20 Eye Physicians of Indiana PC  Elliott A Yolles MD  Adam W Brazus MD  Eye Specialists of Indiana  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Washington Eye Center  Washington Eye Center  Midwest Eye Institute  Associated Vitreoretinal & Uveitis Consultants  Associated Vitreoretinal & Uveitis Consultants  Eye Associates LLC  Eye Associates LLC  Retina Institute  David V Poer MD  Corneal Consultants of Indiana  Howard M Alig MD  Indiana Eye Clinic  Indiana Eye Clinic  Howard Brumbaugh MD  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Linda Fundenberger MD  Klapper Eyelid & Facial Plastic Surgery  Community Eye Care  Community Eye Care  Community Eye Care  Gerald T Keener Jr. MD  Community Eye Care  Uma D Chaluvadi MD Terre Haute, IndianaUpcoming 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 Terre Haute
Nearby Terre Haute Hospitals *Hamilton Center Union Hospital Terre Haute Regional Hospital West Central Community Hospital St Vincent Clay Hospital Paris Community Hospital Sullivan County Community Hospital Putnam County Hospital Greene County General 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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