Electroretinography Center - Providence, RI
Providence 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 Providence * Koch Eye Associates  D Robbins Tien MD  William G Tsiaras MD & Associates  William G Tsiaras MD & Associates  William G Tsiaras MD & Associates  William G Tsiaras MD & Associates  William G Tsiaras MD & Associates  Rhode Island Hospital  Janigian Retina Associates  Yoash Enzer MD  Janigian Retina Associates  Ophthalmic Plastic Sugery  Ophthalmic Plastic Sugery  Retina Consultants  Retina Consultants  Southern New England Retina Associates  Rhode Island Eye Institute  Rhode Island Eye Institute  Rhode Island Eye Institute  Rhode Island Eye Institute  Rhode Island Eye Institute  Rhode Island Eye Institute  Eye Associates  Rhode Island Eye Institute  Rhode Island Eye Institute  S Deborah Murphy MD  Eye Specialists  Eye Specialists  Donald V Fargnoli MD Inc  Kendall A Gibbs MD  Paul S Musco MD  Peter F DeBlasio MD  Robert E Curran MD  Ezra L Galler MD  Glenn S Prescod MD  Christopher C Way MD  Francis X Figueroa MD  Salvatore J Loporchio MD  Safa F Wagdi MD  Koch Eye Associates  Ophthalmic Surgeons Ltd  Guilio Diamonte MD  Dugald H Munro MD  Calenda Eye Care Center  Koch Eye Associates  Koch Eye Associates  Thomas R Leddy MD  Koch Eye Associates  Koch Eye Associates  Koch Eye Associates  Koch Eye Associates  Kent Ophthalmology Inc  Thomas R Leddy MD  Peter C Brasch MD  Jane Joseph-DelVecchio MD  Center for Sight  Center for Sight  Dominick Zangari MD  Charles M Collins MD Ltd  Christine A Gill MD  Charles M Collins MD Ltd  Seacoast Eye Associates  Thames Eye Group  Thames Eye Group  Vision Care Associates Providence, Rhode IslandUpcoming Local Events2012-05-26
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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 Providence
Nearby Providence Hospitals *Hasbro Children's Hospital Rhode Island Hospital Women & Infants Hospital of Rhode Island Southern New England Rehabilitation Center St Joseph Health Services Providence VA Medical Center Roger Williams Medical Center Butler Hospital The Miriam Hospital Bradley Hospital Our Lady of Fatima Hospital Memorial Hospital of Rhode Island Eleanor Slater Hospital Pastore Center Arbour-Fuller Hospital Kent Hospital Sturdy Memorial Hospital Rehabilitation Hospital of Rhode Island Landmark Medical Center Saint Anne's Hospital Charlton Memorial Hospital Taunton State Hospital Morton Hospital & Medical Center Eleanor Slater Hospital Zambarano Unit Milford Regional Medical Center Newport Hospital Boston VA Healthcare System Brockton New Bedford Rehabilitation Hospital Kindred Specialty Hospital Stoughton Caritas Good Samaritan Medical Center Day Kimball Hospital Hubbard Regional Hospital New England Sinai Hospital & Rehabilitation Center South County Hospital Caritas Norwood Hospital St Luke's Hospital Signature Healthcare Brockton Hospital Westwood Lodge Hospital Massachusetts Hospital School Kindred Specialty Hospital Braintree Kindred Specialty Hospital Natick MetroWest Medical Center Framingham Union Hospital MetroWest Medical Center Leonard Morse Hospital Whittier Rehabilitation Hospital Westborough Beth Israel Deaconess Hospital Needham Braintree Rehabilitation Hospital VA Boston Healthcare System West Roxbury Campus South Shore Hospital Milton Hospital Westborough 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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