Electroretinography Center - Clarksville, TN
Clarksville 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 Clarksville * Premier Medical Group Ob/Gyn  Clarksville Ophthalmology PC  Clarksville Ophthalmology PC  Clarksville Ophthalmology PC  McClure Eye Center  Vanderbilt Eye Institute Williamson County  Drs Cheij Cheij & Skelo  Drs Cheij Cheij & Skelo  Guardian Eye Associates PLC  Guardian Eye Associates PLC  Stephen E Grinde MD  Nashville Vision Associates  Tennessee Retina Consultants  Howard H Rosenblum MD  Nashville Vision Associates  Deborah D Sherman MD  Drs Cheij Cheij & Skelo  Nashville Vision Associates  Tennessee Retina Consultants  Guardian Eye Associates PLC  Tennessee Retina  Brian S Biesman MD  Tennessee Retina  Tennessee Retina  Tennessee Retina  John B Bond III MD  Ophthalmology Associates  Cornea Consultants of Nashville  Ophthalmology Associates  Cornea Consultants of Nashville  Ophthalmology Associates  Cornea Consultants of Nashville  Arrowsmith Eye Institute  Cumberland Eye Clinic  Centennial Heart at Skyline  Centennial Heart at Skyline  Rynerson Vision Care  Cumberland Eye Clinic  Loden Vision Centers  Inez B Bounds MD  Karla J Johns MD  Heritage Medical Associates  Carolyn M Parrish MD  Pilkinton Eye Center  Drs Burkhalter & Henderson  Joe M Chisolm MD  Vanderbilt Eye Institute Williamson County  Drs Burkhalter & Henderson  Ronald E McFarland MD & Everton L Arrindell MD  Stewart Shofner MD  Ming X Wang MD  L Edwin Rice Jr. MD  L Edwin Rice Jr. MD  Vanderbilt Eye Institute  Vanderbilt Eye Institute  Vanderbilt Eye Institute  Vanderbilt Eye Institute  Vanderbilt Eye Institute  Vanderbilt Eye Institute  Vanderbilt Eye Institute  Loden Vision Centers  David L Newsom MD  Nashville Eye Associates  Nashville Eye Associates  Vanderbilt Eye Institute Williamson County  Yeshawant B Paranjape MD  Summit Eye Associates PC  Summit Eye Associates PC  Green Eye Center  Green Eye Center  Charles D Atnip MD  Gordon Hamilton & King MDs  Gordon Hamilton & King MDs  The Eye Center  The Eye Center  The Eye Center  Murfreesboro Medical Clinic Ophthamology  Murfreesboro Medical Clinic Ophthamology  McCabe Vision Center  Stones River Eye Center  Stones River Eye Center  Harold T Akin MD  Florence Ophthalmology PC  Eye Care Center  Eye Care Center Clarksville, TennesseeUpcoming 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 Clarksville
Nearby Clarksville Hospitals *Gateway Medical Center Trinity Hospital Western State Hospital Rolling Hills Hospital Jennie Stuart Medical Center Centennial Medical Center Ashland City Cumberland Hall Psychiatric Hospital Horizon Medical Center NorthCrest Medical Center Logan Memorial Hospital Trigg 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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