Electroretinography Center - Santa Cruz, CA
Santa Cruz 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 Santa Cruz * Eye Medical Group of Santa Cruz  Eye Medical Group of Santa Cruz  Jonathan Cress MD  Jonathan Cress MD  Santa Cruz Medical Foundation  Santa Cruz Medical Foundation  Eye Care Medical Group Inc  Bay Eye Medical Group  Cockerham Eye Consultants  Bay Eye Medical Group  Craig Blackwell MD  Retinal Diagnostic Center  Samuel S Masters MD  Retinal Diagnostic Center  Retinal Diagnostic Center  Coastal Eye Associates  Coastal Eye Associates  Coastal Eye Associates  Coastal Eye Associates  Glaucoma Specialists  Beth Green MD  Spectrum Eye Physicians  Spectrum Eye Physicians  Arthur A Basham MD  Medical & Surgical Vision Care  Tony G Andrews MD & Christine E Langell MD  Tony G Andrews MD & Christine E Langell MD  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  David Silverstein MD  N CA Retina Vitreous Associates Inc  N CA Retina Vitreous Associates Inc  Krikor Barsoumian MD Inc  John W Duggan MD  Donald Y Lesser MD  Spectrum Eye Physicians  Edward J Saub MD  Spectrum Eye Physicians  Spectrum Eye Physicians  Winchester Optometry  Laser Eye Center of Silicon Valley  Spectrum Eye Center  Joseph A Eliason MD  Gregory H Phan MD  Optima Ophthalmic Medical Associates Inc  Carey Vision Medical Group  Carey Vision Medical Group  Khoa Nguyen MD  Randal T Pham MD  Peter J Rutti MD  Eye Medical Clinic  Eye Medical Clinic  Eye Medical Clinic  Silicon Valley Physicians  Altos Eye Physicians  Altos Eye Physicians  Altos Eye Physicians  South Bay Retina Inc  Claudio S Contreras MD Inc  San Jose Eye Institute  San Jose Eye Institute  James A Halpern MD  Eric J Del Piero MD  Friedman Eye Center  White & Whisler  White & Whisler  Camino Medical Group  Camino Medical Group  Camino Medical Group  Camino Medical Group  Camino Medical Group  LaserVue Eye Center  Drs Beers Shakinian & Volpicelli  Drs Beers Shakinian & Volpicelli  Drs Beers Shakinian & Volpicelli  San Jose Medical Group  San Jose Medical Group  Raghunand Sastry MD  Timothy T Wang MD  Ngoc Nguyen MD  Denise Mark MD  Monterey Bay Eye Center  Monterey Bay Eye Center  Monterey Bay Eye Center  Richard Harper MD  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Stanford Eye Clinic  Mid Peninsula Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Mid Peninsula Ophthalmology  Palo Alto Medical Clinic Ophthalmology  Stanford Eye Clinic  Mid Peninsula Ophthalmology  Mid Peninsula Ophthalmology  Stanford Eye Clinic  Palo Alto Medical Clinic Ophthalmology Santa Cruz, CaliforniaUpcoming Local Events2012-06-16
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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 Santa Cruz
Nearby Santa Cruz Hospitals *Dominican Hospital Sutter Maternity & Surgery Center Watsonville Community Hospital Good Samaritan Hospital Mission Oaks Good Samaritan Hospital San Jose El Camino Hospital of Los Gatos Kaiser Permanente San Jose Medical Center Santa Clara Valley Medical Center O'Connor Hospital Kaiser Permanente Santa Clara Medical Center Saint Louise Regional Hospital El Camino Hospital Community Hospital of the Monterey Peninsula Regional Medical Center of San Jose Natividad Medical Center VA Palo Alto Health Care System Salinas Valley Memorial Healthcare System Stanford Hospital & Clinics Lucile Packard Children's Hospital Menlo Park Surgical 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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