Electroretinography Center - Towson, MD
Towson 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 Towson * National Retina Institute  National Retina Institute  National Retina Institute  National Retina Institute  National Retina Institute  Clinical Associates PA  Stanley J Amernick MD PA  Florence Davidovski MD PA  John A Kiely MD  Gary L Ehrlich MD  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Eye & Cosmetic Surgery Center  Eye & Cosmetic Surgery Center  John S Minkowski MD  Retina Specialists  Hoover Services for Low Vision & Blindness  Retina Specialists  Glaucoma Consultants  Glaucoma Consultants  Ismail A Shalaby MD PhD  MD Eyecare LLC  MD Eyecare LLC  MD Eyecare LLC  MD Eyecare LLC  Nicole Bertram-Love MD  Baltimore Eye Physicians LLC  Darab Hormozi MD  Baltimore Eye Physicians LLC  Kameen Eye Associates  Select Eye Care  Baltimore Eye Physicians LLC  Baltimore Eye Physicians LLC  Baltimore Eye Physicians LLC  Alan Z Steinberg MD  Michael B Herr MD PA  Joyce A Lammlein MD  Eye Consultants of Maryland  Alan L Robin MD  The Retina Care Center  The Retina Care Center  Basil S Morgan MD  Select Eye Care  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Ronald C Richter MD  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  Wilmer Eye Institute at Green Spring Station  James E Comber MD  Krieger Eye Institute  Krieger Eye Institute  Krieger Eye Institute  Krieger Eye Institute  Krieger Eye Institute  Krieger Eye Institute  Allan D Jensen MD  Krieger Eye Institute  Eye Consultants of Maryland  Eye Consultants of Maryland  Krieger Eye Institute  Krieger Eye Institute  Sinai Hospital Ophthalmology  Sinai Hospital Ophthalmology  Patricia L Schmoke MD  Raymond W Doyle MD  Zulfiqar Ali MD  Johns Hopkins Hospital Wilmer Eye Institute  Morton F Goldberg MD  Morton F Goldberg MD  Duane M Bryant MD  Wilmer Eye Institute Vitreoretinal Service  Wilmer Eye Institute  Johns Hopkins Hospital Ophthalmology  Daniel Finkelstein MD  Johns Hopkins Hospital Wilmer Eye Institute  Morton F Goldberg MD  Johns Hopkins Hospital Ophthalmology Dept  Johns Hopkins Ophthalmology Ocular Plastic Surgery  Johns Hopkins Hospital Pediatric Ophthalmology  Wilmer Eye Institute Vitreoretinal Service  Johns Hopkins Hospital Ophthalmology  Johns Hopkins Hospital Wilmer Eye Institute  Johns Hopkins Hospital Ophthalmology  Wilmer Eye Institute  Peter J McDonnell III MD  Johns Hopkins Ophthalmology Ocular Plastic Surgery  Johns Hopkins Hospital Ophthalmology  Wilmer Eye Institute Vitreoretinal Service Towson, MarylandUpcoming 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 Towson
Nearby Towson Hospitals *St Joseph Medical Center Greater Baltimore Medical Center Sheppard Pratt Health System Good Samaritan Hospital of Maryland Mt Washington Pediatric Hospital Sinai Hospital of Baltimore Levindale Hebrew Geriatric Center & Hospital Union Memorial Hospital Kennedy Krieger Institute Maryland General Hospital Johns Hopkins Hospital Mercy Medical Center Franklin Square Hospital Center Baltimore VA Medical Center University of Maryland Medical Center Bon Secours Baltimore Health System University Specialty Hospital Johns Hopkins Bayview Medical Center Kernan Hospital Saint Agnes Hospital Northwest Hospital Harbor Hospital Center Spring Grove Hospital Center Sheppard Pratt at Ellicott City Upper Chesapeake Medical Center Baltimore Washington Medical Center Springfield Hospital Center Howard County General Hospital Carroll Hospital Center Laurel Regional Hospital Anne Arundel Medical Center Harford Memorial Hospital Montgomery General Hospital Perry Point VA Medical Center Upper Shore Community Mental Health Center Chester River Hospital Center Doctors Community Hospital Hanover 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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