Electroretinography Center - Tustin, CA
Tustin 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 Tustin * Paul A Brailsford MD  Pacific Eye Medical Group  Michael B Lappin MD  Pacific Eye Medical Group  Orange County Retina Medical Group  Orange County Retina Medical Group  Orange County Retina Medical Group  David Sacks MD  Sierra Eye & Laser Institute  Retina Associates of Orange County  Florencio C Ching MD  Retina Institute  Chao Vision Institute  Daniel C Kline MD Inc  David A Sami MD  Charles E Keller MD  Felizardo S Camilon MD  John Kleinberg MD  Sheldon Nankin MD  Aisha Simjee MD  Chien Ko Wu & Meei Ling Wu MDs  George H Garcia MD Inc  George H Garcia MD Inc  Lakeside Vision Center  Lakeside Vision Center  Eye Associates of Orange County  Lasik Center Medical Group Inc  South Coast Laser Center  South Coast Laser Center  UCI Medical Center Ophthalmology  Shahla Abedi MD Inc  Shahla Abedi MD Inc  Irvine Eye Physicians and Surgeons Inc  Irvine Eye Physicians and Surgeons Inc  Howard Conn MD Inc  Jayne N Ge MD  Marjorie A Mosier MD  Pacific Summit Eye Medical Center  Orange County Ophthalmology  Orange County Ophthalmology  TLC Laser Center  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Arthur D Charap MD  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  UCI Medical Center Ophthalmology  Universal Vision Medical Center  Mark Bronstein MD  Orange Coast Eye Center  Advanced Eye Care Clinic  Premier Eye Institute  Orange Coast Eye Center  Thanhlan Quan MD  Viet Dang MD  W Andrew Cies MD  Cory Brame MD  Stephen Prepas MD  Richard A Weiss MD  Richard L Nguyen MD  Advanced Eye Center  Eye Center of Orange County  Eye Center of Orange County  William P Chen MD FACS  Arlene Gwon MD  Stephen Johnson MD  Lyon Laser Eye Institute  Sean S Bahri MD  Southland Eye  Southland Eye  Gary S Reiter MD  Triet M Nguyen MD  John S Marshburn MD  Alice Song MD Corp  Ophthalmology Corporation  John D Zdral MD John Esser MD  Cuong-Dung T Do MD  Arthur Lu MD  Atlantis Eyecare  Atlantis Eyecare  Bolsa Laser Eye Center  Astorino Eye Center  Brent Norman MD  Aesthetic Eye Care Institute  Steven G Yoelin MD  Hyong S Choe MD  Stanley S. Kim MD  Feinerman Vision Center  Orange County Retina Medical Group  Vision Care Network  Mary A Cote MD  John Cheng MD  Henry Cheng MD Tustin, CaliforniaUpcoming Local Events2012-05-28
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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 Tustin
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