Electroretinography Center - Tempe, AZ
Tempe 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 Tempe * Drs Ford & Caserta  Drs Ford & Caserta  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ronald D Cox MD  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Dennis C Cooper MD  Associated Ophthalmologists Ltd  Retina Associates SW PC  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  William McLeish MD LLC  Grant W Heinz MD PC  Scottsdale Eye Physicians & Surgeons  Scottsdale Eye Physicians & Surgeons  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  Brian T Rose MD PLC  The Retina Group  Barnet Dulaney Perkins Eye Center  Gary Hall Laser Center PC  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Phoenix Retina Center  Phoenix Retina Center  Phoenix Retina Center  M Kathleen Carriker MD  Ophthalmic Surgeons & Physicians Ltd  Alois Falkenstein MD  Jeffrey P Edelstein MD  Valley Eye Specialists  Valley Eye Specialists  Valley Eye Specialists  Valley Eye Specialists  East Valley Glaucoma  Biltmore Eye Physicians PC  Biltmore Eye Physicians PC  Biltmore Eye Physicians PC  Affiliated Eye Surgeons  Neuro-Ophthalmology Ltd  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Arizona Pediatric Eye Specialists PLC  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Arizona Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Misha Faustina MD  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Chandler Eye Center  Horizon Eye Specialist & Lasik Center  Warren H Heller MD  Horizon Eye Specialist & Lasik Center  Associated Ophthalmologists Ltd  Brems Eye Center  Buena Vista Ophthalmologists PC  James R Meador Jr. MD  Buena Vista Ophthalmologists PC  Thomas F Moore MD  Affiliated Eye Surgeons  Walman Eye Center  Affiliated Eye Surgeons  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Cornea Consultants of Arizona  Associated Eye Specialists  Associated Eye Specialists  Associated Retina Consultants LTD  David R Johnson MD  Q Vision  George R Reiss MD PC  Schwartz Laser Eye Center  Schwartz Laser Eye Center  Arizona Pediatric Eye Specialists PLC  Schwartz Laser Eye Center  Tozer Eye Center  Tozer Eye Center  Richard Isenberg MD  Woolf Eye & Laser Clinic  Advanced Laser & Eye Center of Arizona  Phoenix Ophthalmologists PA  Phoenix Ophthalmologists PA  Carriker Eye Center  Risser -Thomas Eye Clinic  Paul M Petelin Jr MD  Risser -Thomas Eye Clinic Tempe, ArizonaUpcoming 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 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 Tempe
Nearby Tempe Hospitals *Tempe St Luke's Hospital Banner Behavioral Health Hospital Banner Desert Medical Center Scottsdale Healthcare Osborn Select Specialty Hospital Scottsdale Arizona State Hospital Desert Vista Hospital Maricopa Medical Center St Luke's Behavioral Health Center St Luke's Medical Center Youth Development Institute Los Ninos Hospital Arizona Orthopedic Surgical Hospital Arizona Heart Hospital Phoenix Children's Hospital Banner Good Samaritan Medical Center Banner Good Samaritan Rehabilitation Select Specialty Hospital Phoenix Downtown Phoenix Indian Medical Center Phoenix Memorial Health Care Center Promise Hospital of Phoenix Carl T Hayden VA Medical Center Select Specialty Hospital Phoenix St Joseph's Hospital & Medical Center Kindred Hospital Phoenix Chandler Regional Hospital Scottsdale Healthcare Shea HEALTHSOUTH Scottsdale Rehabilitation Hospital Phoenix Baptist Hospital Kindred Hospital Scottsdale Surgical Specialty Hospital of Arizona Arizona Spine & Joint Hospital John C Lincoln Hospital North Mountain Banner Gateway Medical Center Maryvale Hospital Medical Center Mercy Gilbert Medical Center Banner Baywood Medical Center Banner Baywood Heart Hospital Paradise Valley Hospital Mayo Clinic Hospital Scottsdale Healthcare Thompson Peak Banner Estrella Medical Center Banner Thunderbird Medical Center Mountain Vista Medical Center John C Lincoln Hospital Deer Valley HEALTHSOUTH Valley of the Sun Rehabilitation Hospital Arrowhead Hospital Banner Boswell Medical Center West Valley Hospital Gila River Health Care Huhukam Memorial Hospital Banner Del E Webb Medical Center 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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