Electroretinography Center - Muncie, IN
Muncie 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 Muncie * Muncie Eye Center  Muncie Eye Center  Midwest Eye Institute  Vasilis Makris MD  Ajit K Tiwari MD  Thomas E Strayer MD  Anderson Center For Sight PC  Donald M Perez MD LLC  Donald M Perez MD LLC  Anderson Center For Sight PC  Hoosier Ophthalmology Associates  Hoosier Ophthalmology Associates  Vision Center  Lakeview Eye Physicians  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Eye Surgeons of Indiana  Community Eye Care  Community Eye Care  Comprehensive Eye Care  Eye Physicians  Eye Physicians  Uma D Chaluvadi MD  Community Eye Care  Community Eye Care  Gerald T Keener Jr. MD  Klapper Eyelid & Facial Plastic Surgery  Whitson Vision PC  Whitson Vision PC  Abrams Eyecare Associates  Abrams Eyecare Associates  Abrams Eyecare Associates  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Midwest Eye Institute  Howard Brumbaugh MD  Linda Fundenberger MD  Hua Gao MD  Eye Associates LLC  Eye Associates LLC  Retina Institute  David V Poer MD  Corneal Consultants of Indiana  Associated Vitreoretinal & Uveitis Consultants  Associated Vitreoretinal & Uveitis Consultants  Max A Henry MD  Vision Care Associates  Allen County Retinal Surgeons  Vision Care Associates  Allen County Retinal Surgeons  Washington Eye Center  Washington Eye Center  Howard M Alig MD  Adam W Brazus MD  Ophthalmology Consultants Of Fort Wayne  20/20 Eye Physicians of Indiana PC  20/20 Eye Physicians of Indiana PC  20/20 Eye Physicians of Indiana PC  Ophthalmology Consultants Of Fort Wayne  Ophthalmology Consultants Of Fort Wayne  Elliott A Yolles MD  Fort Wayne Retina  Eye Specialists of Indiana  Center for Sight  Center for Sight  I U Eye Care  Ira Younger MD  David A Plager 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  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana University Medical Center Ophthalmology  Indiana Eye Clinic  Indiana Eye Clinic  Indiana Eye Clinic  Indiana Eye Clinic  Earl A Braunlin MD  J Rex Parent MD  J Rex Parent MD  Southside Eye Associates Muncie, IndianaUpcoming Local Events2012-06-17
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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 Muncie
Nearby Muncie Hospitals *Ball Memorial Hospital Community Hospital Anderson Saint John's Health System Henry County Memorial Hospital Blackford County Hospital St Vincent Randolph Hospital St Vincent Mercy Hospital Jay County Hospital VA Northern Indiana Health Care System Marion Campus Marion General Hospital Hancock Regional Hospital Richmond State 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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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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Usher Syndrome
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