Electroretinography Center - Oro Valley, AZ
Oro Valley 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 Oro Valley * Fishkind & Bakewell Eye Care & Surgery Centers  Fishkind & Bakewell Eye Care & Surgery Centers  Fishkind & Bakewell Eye Care & Surgery Centers  Pima Eye Institute PC  Mark L Griswold DO  Jonathon L Gross MD  Pima Eye Institute PC  Sam Sato MD PC  Retina Centers PC  Glaucoma Specialists  Retina Centers PC  Retina Centers PC  Christopher M Seniw MD PC  Tucson Eye Physicians  Tucson Eye Physicians  Eye Associates of Tucson  Eye Associates of Tucson  Eye Associates of Tucson  Eye Associates of Tucson  Barnet Dulaney Perkins Eye Center  Lynn Polonski MD  Sam Sato MD PC  Diego H Calonje MD PC  Hodges Eye Care & Surgical Center  Retina Specialists of Southern Arizona PLLC  Tucson Eye Care PC  Hodges Eye Care & Surgical Center  Retina Specialists of Southern Arizona PLLC  Robert Snyder MD PhD  Arizona Eye Consultants  Arizona Eye Consultants  Arizona Eye Consultants  Charles S Gannon MD  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  Eye Associates of Tucson  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  Norman Ahl MD  Alma Murphy MD PC  Southern Arizona Ophthalmology  El Dorado Eye Associates  David W Day MD  El Dorado Eye Associates  El Dorado Eye Associates  Jorge A Godinez MD  Arizona Centre Plastic Surgery  Desert Eye Associates Ltd  Desert Eye Associates Ltd  Desert Eye Associates Ltd  Desert Eye Associates Ltd  Cornea Associates PLLC  Cornea Associates PLLC  Retina Associates SW PC  Retina Associates SW PC  Retina Associates SW PC  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  University Physicians Healthcare Ophthalmology  Southwestern Eye Center  Cochise Eye & Laser Center  Cochise Eye & Laser Center  Cochise Eye & Laser Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Arizona Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  East Valley Ophthalmology  Desert Vista Eye Specialists  Desert Vista Eye Specialists  Vision Center  Q Vision  Associated Ophthalmologists Ltd  The Retina Group  Arizona Pediatric Eye Specialists PLC  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  Advanced Laser & Eye Center of Arizona  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Chandler Eye Center  Southwestern Eye Center  Woolf Eye & Laser Clinic  Jeffrey P Edelstein MD  East Valley Glaucoma  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  Valley Eye Specialists Oro Valley, ArizonaUpcoming 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 Usher syndrome?Usher syndrome is the most common condition that affects both hearing and vision. A syndrome is a disease or disorder that has more than one feature or symptom. The major symptoms of Usher syndrome are hearing loss and an eye disorder called retinitis pigmentosa, or RP. RP causes night-blindness and a loss of peripheral vision (side vision) through the progressive degeneration of the retina. The retina is a light-sensitive tissue at the back of the eye and is crucial for vision. As RP progresses, the field of vision narrows - a condition known as "tunnel vision" - until only central vision (the ability to see straight ahead) remains. Many people with Usher syndrome also have severe balance problems. There are three clinical types of Usher syndrome:
In the United States, types 1 and 2 are the most common types. Together, they... Other Related Electroretinography ArticlesEmergency Contact for Oro Valley
Nearby Oro Valley Hospitals *Northwest Medical Center Oro Valley Sonora Behavioral Health Hospital HEALTHSOUTH Rehabilitation Hospital of Southern Arizona Northwest Medical Center Sierra Tucson Tucson Heart Hospital University Medical Center Carondelet St Mary's Hospital HEALTHSOUTH Rehabilitation Institute of Tucson Palo Verde Mental Health Services Tucson Medical Center Carondelet St Joseph's Hospital Kindred Hospital Tucson Cornerstone Hospital of Southeast Arizona Southern Arizona VA Health Care System University Physicians Healthcare Hospital at Kino 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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Usher Syndrome
- There are three types of Usher (Usher's) syndrome, the most common condition that affects both vision and hearing. The major symptoms of Usher syndrome include retinitis pigmentosa (night-blindness and a loss of peripheral vision), and hearing loss. Usher syndrome is a genetic condition. There is no cure for Usher syndrome.
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