Electroretinography Center - Hattiesburg, MS
Hattiesburg 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 Hattiesburg * Hattiesburg Clinic Ophthalmology  Hattiesburg Clinic Ophthalmology  Hattiesburg Clinic Ophthalmology  Southern Eye Center PA  Southern Eye Center PA  Southern Eye Center PA  Southern Eye Center PA  Southern Eye Center PA  Southern Eye Center PA  Southern Eye Center PA  Green Eye Institute  Green Eye Institute  Green Eye Institute  Green Eye Institute  Hattiesburg Eye Clinic  Lindstrom Eye Clinic PA  Lindstrom Eye Clinic PA  Hattiesburg Eye Clinic  Benefield Eye Care PC  Eye Associates of the South  Eye Associates of the South  Eye Associates of the South  Eye Associates of the South  Center for Eye Care  Tri County Eye Clinic  Tri County Eye Clinic  Edgar M Dapremont MD  Eye Clinic PA  Hogan Eye Clinic & Surgical Center  Gulf Coast Eye Center  Mississippi Eye Associates  Kent Kebert MD  Southwest Mississippi Eye Center  Brookhaven Eye Center  Meridian Ophthalmic Associates PA  Meridian Ophthalmic Associates PA  Meridian Ophthalmic Associates PA  The Eye Clinic of Meridian  The Eye Clinic of Meridian  Richard Pharr MD  Woody Davis MD  Donald C Faucett MD  Jackson Eye Institute  Mississippi Vision Correction Center PLLC  Mississippi Vision Correction Center PLLC  Mississippi Vision Correction Center PLLC  Ruth K Fredericks MD  Jackson Eye Associates PLLC  MS Retina Associates  MS Retina Associates  Jackson Eye Associates PLLC  MS Retina Associates  Jackson Eye Associates PLLC  D E Magee Jr. MD  Jackson Eye Associates PLLC  Jackson Eye Associates PLLC  Jackson Eye Associates PLLC  Jackson Eye Associates PLLC  Jackson Eye Associates PLLC  Jackson Eye Associates PLLC  Fred L McMillan MD  John B Milam MD  Ophthalmic Plastic Surgery Specialist  Eye Surgical Associates  Eye Surgical Associates  Eye Surgical Associates  Maurice James MD  Ken C Jones MD  Ching J Chen & Richard Chiu MDs  Ching J Chen & Richard Chiu MDs  University Medical Center Ophthalmology Dept  University Medical Center Ophthalmology Dept  University Medical Center Ophthalmology Dept  University Medical Center Ophthalmology Dept  Cabell Eye Clinic  William C Mayfield Jr. MD  Terrel Williams & Denise E Phillips MDs  Terrel Williams & Denise E Phillips MDs  Leslie H Bear MD  Ricky G Russell MD  Jackson Eye Associates PLLC  Jackson Eye Associates PLLC Hattiesburg, MississippiUpcoming Local Events2012-06-17
2012-11-11
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 Hattiesburg
Nearby Hattiesburg Hospitals *Regency Hospital of Hattiesburg Wesley Medical Center Clearview Recovery Center Forrest General Hospital South Mississippi State Hospital Perry County General Hospital South Central Regional Medical Center Covington County Hospital Marion General Hospital Stone County 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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