Electroretinography Center - Phoenix, AZ
Phoenix 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 Phoenix * Warren H Heller MD  Misha Faustina MD  Horizon Eye Specialist & Lasik Center  Horizon Eye Specialist & Lasik Center  Thomas F Moore MD  Affiliated Eye Surgeons  Neuro-Ophthalmology Ltd  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Walman Eye Center  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Brems Eye Center  Buena Vista Ophthalmologists PC  James R Meador Jr. MD  Buena Vista Ophthalmologists PC  Associated Eye Specialists  Associated Eye Specialists  Valley Eye Specialists  Valley Eye Specialists  Valley Eye Specialists  Arizona Pediatric Eye Specialists PLC  Gary Hall Laser Center PC  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  M Kathleen Carriker MD  Biltmore Eye Physicians PC  Biltmore Eye Physicians PC  Biltmore Eye Physicians PC  Phoenix Ophthalmologists PA  Phoenix Ophthalmologists PA  Associated Retina Consultants LTD  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Carriker Eye Center  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Affiliated Eye Surgeons  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Clear Vision Ophthalmology PC  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  William McLeish MD LLC  Drs Ford & Caserta  Dennis C Cooper MD  Drs Ford & Caserta  Southwestern Eye Center  Southwestern Eye Center  Scottsdale Eye Physicians & Surgeons  Scottsdale Eye Physicians & Surgeons  Phoenix Retina Center  Phoenix Retina Center  Phoenix Retina Center  Arizona Pediatric Eye Specialists PLC  Southwestern Eye Center  Retina Associates SW PC  Desert Eye Specialists LTD  Desert Eye Specialists LTD  Arizona Pediatric Eye Specialists PLC  Ophthalmic Surgeons & Physicians Ltd  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Oculoplastic Consultants of Arizona  Brian T Rose MD PLC  Robert Rubenzik MD  Ronald D Cox MD  George R Reiss MD PC  George R Reiss MD PC  Southwestern Eye Center  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Grant W Heinz MD PC  The Retina Group  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  David R Johnson MD  Jeffrey P Edelstein MD  Valley Retina Surgeons  Schwartz Laser Eye Center  Schwartz Laser Eye Center  Schwartz Laser Eye Center  Newman Eye Center Phoenix, ArizonaPhoenix was incorporated as a city in 1881 after being founded in 1868 near the Salt River, near its confluence with the Gila River. The city eventually became a major transportation hub in North America and a main transportation, financial, industrial, cultural and economic center of the Southwestern United States. The city has a notable and famous political culture and has been home to numerous influential American politicians and other dignitaries, including Barry Goldwater, William Rehnquist, John McCain, Janet Napolitano, Carl Hayden, and Sandra Day O'Connor. Residents of the city are known as Phoenicians. Upcoming Local Events2012-07-14
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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 Phoenix
Nearby Phoenix Hospitals *Phoenix Memorial Health Care Center Promise Hospital of Phoenix Banner Good Samaritan Rehabilitation Select Specialty Hospital Phoenix Downtown Banner Good Samaritan Medical Center Select Specialty Hospital Phoenix St Joseph's Hospital & Medical Center St Luke's Behavioral Health Center St Luke's Medical Center Youth Development Institute Kindred Hospital Phoenix Arizona State Hospital Arizona Heart Hospital Maricopa Medical Center Phoenix Children's Hospital Carl T Hayden VA Medical Center Los Ninos Hospital Phoenix Indian Medical Center Phoenix Baptist Hospital Surgical Specialty Hospital of Arizona Maryvale Hospital Medical Center John C Lincoln Hospital North Mountain Tempe St Luke's Hospital Scottsdale Healthcare Osborn Select Specialty Hospital Scottsdale Banner Behavioral Health Hospital Banner Estrella Medical Center Banner Thunderbird Medical Center Banner Desert Medical Center HEALTHSOUTH Valley of the Sun Rehabilitation Hospital Arizona Orthopedic Surgical Hospital Desert Vista Hospital Paradise Valley Hospital Scottsdale Healthcare Shea HEALTHSOUTH Scottsdale Rehabilitation Hospital Kindred Hospital Scottsdale John C Lincoln Hospital Deer Valley West Valley Hospital Arrowhead Hospital Banner Boswell Medical Center Chandler Regional Hospital Mayo Clinic Hospital Scottsdale Healthcare Thompson Peak Arizona Spine & Joint Hospital Banner Gateway Medical Center Mercy Gilbert Medical Center Banner Del E Webb Medical Center Banner Baywood Medical Center Banner Baywood Heart Hospital Mountain Vista Medical Center Gila River Health Care Huhukam Memorial 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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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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Usher Syndrome
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