Electroretinography Center - Tracy, CA
Tracy 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 Tracy * Tracy Eye Care Medical Clinic  Jordan M Usunov MD  Delta Eye Medical Group  Zeiter Eye Clinic  Zeiter Eye Clinic  Heritage Eye Associates  Heritage Eye Associates  Heritage Eye Associates  Zeiter Eye Clinic  Zeiter Eye Clinic  Retinal Consultants  Retinal Consultants  Delta Eye Medical Group  Delta Eye Medical Group  Delta Eye Medical Group  Delta Eye Medical Group  Central Valley Eye & Laser Center  Harold Hand MD  Kaiser Permanente Medical Center  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Permanente Medical Center  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  Kaiser Stockton Ophthalmology  California Eye Clinic  California Eye Clinic  California Eye Clinic  Children's Hospital Oakland  Harland Langdon MD  Northern California Eye Physicians  Northern California Eye Physicians  Sylvan Eye Associates  Sutter Gould Medical Foundation Eye Care Center  Sylvan Eye Associates  Sutter Gould Medical Foundation Eye Care Center  Sylvan Eye Associates  Modesto Eye Surgery  Sutter Gould Medical Foundation Eye Care Center  Suraj Cherry MD  Auker Eye Institute  Retinal Consultants  J Allen Gammon MD  Stanislaus Eye Surgery  Stanislaus Eye Surgery  Stanislaus Eye Surgery  Stanislaus Eye Surgery  Stanislaus Eye Surgery  Lerner Eye Center  Lerner Eye Center  East Bay Retina Consultants  Day & Good MDs  East Bay Retina Consultants  East Bay Retina Consultants  East Bay Eye Center  East Bay Eye Center  Children's Eye Care of Northern California  Mission Valley Medical Eye Center  Ngoc Nguyen MD  San Jose Medical Group  Retinal Diagnostic Center  San Jose Medical Group  Retinal Diagnostic Center  Raghunand Sastry MD  Timothy T Wang MD  Retinal Diagnostic Center  Danville San Ramon Eye Medical Corp  Danville San Ramon Eye Medical Corp  Danville San Ramon Eye Medical Corp  Rona Z Silkiss MD  Palo Alto Medical Foundation Fremont Center  Maskeen Sabharwal MD  James J Song MD  Fang Tan MD  Kenneth C Low MD APC  Kenneth C Low MD APC  Kenneth C Low MD APC  Robert C Black MD  Singer Cohn & Catmzaro MDs  Singer Cohn & Catmzaro MDs  Claudio S Contreras MD Inc  San Jose Eye Institute  San Jose Eye Institute  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  Spectrum Eye Center  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  Kaiser Permanente Park Shadelands Ophthalmology  LaserVue Eye Center Tracy, CaliforniaUpcoming Local Events2012-06-03
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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 Tracy
Nearby Tracy Hospitals *Sutter Tracy Community Hospital Kaiser Permanente Hospital Manteca San Joaquin General Hospital Doctors Hospital of Manteca Dameron Hospital St Joseph's Medical Center St Joseph's Behavioral Health Center Livermore Division of the VA Palo Alto Healthcare System Valley Memorial Hospital Doctors Medical Center of Modesto Kindred Hospital Modesto Memorial Medical Center ValleyCare Health System Pleasanton Stanislaus Surgical Hospital Sutter Delta Medical Center Lodi Memorial Hospital West Lodi Memorial Hospital San Ramon Regional Medical Center Oak Valley Hospital Washington Hospital Fremont Hospital Regional Medical Center of San Jose 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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