Electroretinography Center - Tucson, AZ
Tucson 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 Tucson * Retina Centers PC  Retina Centers PC  Retina Centers PC  Diego H Calonje MD PC  Arizona Eye Consultants  Arizona Eye Consultants  Arizona Eye Consultants  Hodges Eye Care & Surgical Center  Hodges Eye Care & Surgical Center  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  Norman Ahl MD  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  Alma Murphy MD PC  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  Charles S Gannon MD  Sam Sato MD PC  Sam Sato MD PC  Barnet Dulaney Perkins Eye Center  Fishkind & Bakewell Eye Care & Surgery Centers  Fishkind & Bakewell Eye Care & Surgery Centers  Fishkind & Bakewell Eye Care & Surgery Centers  Retina Specialists of Southern Arizona PLLC  Tucson Eye Care PC  Retina Specialists of Southern Arizona PLLC  Robert Snyder MD PhD  Eye Associates of Tucson  Eye Associates of Tucson  Eye Associates of Tucson  Eye Associates of Tucson  Eye Associates of Tucson  Southern Arizona Ophthalmology  Tucson Eye Physicians  Tucson Eye Physicians  Glaucoma Specialists  Christopher M Seniw MD PC  Jorge A Godinez MD  Arizona Centre Plastic Surgery  El Dorado Eye Associates  David W Day MD  El Dorado Eye Associates  El Dorado Eye Associates  Desert Eye Associates Ltd  Desert Eye Associates Ltd  Desert Eye Associates Ltd  Desert Eye Associates Ltd  Cornea Associates PLLC  Cornea Associates PLLC  Lynn Polonski MD  Retina Associates SW PC  Retina Associates SW PC  Retina Associates SW PC  Jonathon L Gross MD  Pima Eye Institute PC  Pima Eye Institute PC  Mark L Griswold DO  Cochise Eye & Laser Center  Cochise Eye & Laser Center  Cochise Eye & Laser Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Arizona Eye Center  East Valley Ophthalmology  Desert Vista Eye Specialists  Desert Vista Eye Specialists  Vision Center  Associated Ophthalmologists Ltd  Q Vision  Arizona Pediatric Eye Specialists PLC  The Retina Group  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  East Valley Ophthalmology  East Valley Ophthalmology  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Advanced Laser & Eye Center of Arizona  Cornea Consultants of Arizona  Chandler Eye Center  Southwestern Eye Center  Jeffrey P Edelstein MD Tucson, ArizonaTucson is a city in and the county seat of Pima County, Arizona, United States, located 118 miles (188 km) southeast of Phoenix and 60 miles (98 km) north of the U.S.-Mexico border. The English name Tucson derives from the Spanish name of the city, Tucson, which was borrowed from the O'odham name Cuk Son, meaning "(at the) base of the black [hill]", a reference to an adjacent volcanic mountain. Tucson is sometimes referred to as "The Old Pueblo". Upcoming Local Events2012-06-01
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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 Tucson
Nearby Tucson Hospitals *Carondelet St Mary's Hospital University Medical Center Southern Arizona VA Health Care System University Physicians Healthcare Hospital at Kino Tucson Heart Hospital HEALTHSOUTH Rehabilitation Institute of Tucson Tucson Medical Center Palo Verde Mental Health Services Carondelet St Joseph's Hospital Kindred Hospital Tucson Northwest Medical Center HEALTHSOUTH Rehabilitation Hospital of Southern Arizona Sonora Behavioral Health Hospital Cornerstone Hospital of Southeast Arizona Northwest Medical Center Oro Valley Sierra Tucson 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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