Electroretinography Center - Dundalk, MD
Dundalk 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 Dundalk * Baltimore Eye Care  Baltimore Eye Care  Drs Kasper Loeb & Zimmerman  Drs Kasper Loeb & Zimmerman  Drs Kasper Loeb & Zimmerman  Nader G Gary MD  North Point Retina  Nader G Gary MD  Nicholas T Iliff MD  Robert S Weinberg MD  Gary L Ehrlich MD  Ismail A Shalaby MD PhD  Eye Consultants of Maryland  Eye Consultants of Maryland  Eye Consultants of Maryland  Omni Eye Specialists  Park Eyecare  Johns Hopkins Hospital Wilmer Eye Institute  Morton F Goldberg MD  Morton F Goldberg 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  Johns Hopkins Hospital Wilmer Eye Institute  Johns Hopkins Hospital Wilmer Eye Institute  Johns Hopkins Hospital Pediatric Ophthalmology  Johns Hopkins Hospital Ophthalmology Dept  Wilmer Eye Institute Vitreoretinal Service  Walter J Stark Jr. MD  Johns Hopkins Hospital Ophthalmology  Wilmer Eye Institute  Wilmer General Eye Service  Wilmer General Eye Service  Wilmer Eye Institute Vitreoretinal Service  Johns Hopkins Hospital Wilmer Eye Institute  Vincent Notarangelo MD  Katzen Eye Group  Wilmer Eye Institute at White Marsh  Eye & Cosmetic Surgery Center  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  Katzen Eye Group  John A Kiely MD  Wilmer Eye Institute at White Marsh  Katzen Eye Group  Katzen Eye Group  Jay N Parran MD  Eye & Cosmetic Surgery Center  Wilmer Eye Institute at White Marsh  James E Comber MD  University of Maryland Eye Associates  University of Maryland Eye Associates  University of Maryland Eye Associates  University of Maryland Eye Associates  University of Maryland Eye Associates  University of Maryland Eye Associates  University of Maryland Eye Associates  University of Maryland Eye Associates  Duane M Bryant MD  Michael B Herr MD PA  Joyce A Lammlein MD  Allan D Jensen MD  Zulfiqar Ali MD  Basil S Morgan MD  Parris - Castoro Eye & Laser Center  Parris - Castoro Eye & Laser Center  Parris - Castoro Eye & Laser Center  Select Eye Care  Alan Z Steinberg MD  MD Eyecare LLC  MD Eyecare LLC  MD Eyecare LLC  MD Eyecare LLC  Ebube E Odunukwe MD  Patricia L Schmoke MD  Clinical Associates PA  Stanley J Amernick MD PA  Florence Davidovski MD PA  Baltimore Eye Physicians LLC  Baltimore Eye Physicians LLC  Kameen Eye Associates  Select Eye Care  Baltimore Eye Physicians LLC  Baltimore Eye Physicians LLC Dundalk, 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 Dundalk
Nearby Dundalk Hospitals *Johns Hopkins Bayview Medical Center Johns Hopkins Hospital Kennedy Krieger Institute Franklin Square Hospital Center Harbor Hospital Center University Specialty Hospital Mercy Medical Center Baltimore VA Medical Center University of Maryland Medical Center Maryland General Hospital Union Memorial Hospital Good Samaritan Hospital of Maryland Bon Secours Baltimore Health System Saint Agnes Hospital St Joseph Medical Center Levindale Hebrew Geriatric Center & Hospital Mt Washington Pediatric Hospital Sinai Hospital of Baltimore Sheppard Pratt Health System Greater Baltimore Medical Center Baltimore Washington Medical Center Kernan Hospital Spring Grove Hospital Center Sheppard Pratt at Ellicott City Northwest Hospital Anne Arundel Medical Center Upper Chesapeake Medical Center Howard County General Hospital Upper Shore Community Mental Health Center Laurel Regional Hospital Chester River Hospital Center Springfield Hospital Center Doctors Community Hospital Harford Memorial Hospital Perry Point VA Medical Center Montgomery General Hospital Prince George's Hospital Center Gladys Spellman Specialty Hospital Carroll Hospital Center Washington Adventist Hospital Holy Cross Hospital The HSC Pediatric Center Providence Hospital Walter Reed Army Medical Center 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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