Electroretinography Center - Avondale, AZ
Avondale 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 Avondale * Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Arizona Pediatric Eye Specialists PLC  Clear Vision Ophthalmology PC  Kenneth A Batko MD  Southwestern Eye Center  Associated Retina Consultants LTD  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Elizabeth V Tukan MD  Walman Eye Center  Southwestern Eye Center  Charles J Hofer MD  Plaza Del Rio Eye Clinic  Plaza Del Rio Eye Clinic  Banner Arizona Medical Clinic Dermatology & Ophthalmology  Banner Arizona Medical Clinic Ophthalmology, Neurology & Psychiatry  Banner Arizona Medical Clinic Dermatology & Ophthalmology  Banner Arizona Medical Clinic Ophthalmology, Neurology & Psychiatry  Cornea Consultants of Arizona  Desert Eye Specialists LTD  Cornea Consultants of Arizona  Parminderpal Singh MD  Cornea Consultants of Arizona  Desert Eye Specialists LTD  Jon S Jacobson MD  Arrowhead Eye Center  Warren H Victor MD  Arizona Eye Institute & Cosmetic Laser Center  Valley Retina Surgeons  Susan A Briceland MD  Barnet Dulaney Perkins Eye Center  Susan A Briceland MD  George R Reiss MD PC  George R Reiss MD PC  Carriker Eye Center  Robert Rubenzik MD  Oculoplastic Consultants of Arizona  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Valley Eye Specialists  Valley Eye Specialists  Associated Ophthalmologists Ltd  Valley Eye Specialists  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Arizona Pediatric Eye Specialists PLC  Warren H Heller MD  Phoenix Ophthalmologists PA  Phoenix Ophthalmologists PA  Associated Eye Specialists  Associated Eye Specialists  Affiliated Eye Surgeons  Thomas F Moore MD  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Horizon Eye Specialist & Lasik Center  Horizon Eye Specialist & Lasik Center  Associated Ophthalmologists Ltd  Brems Eye Center  Buena Vista Ophthalmologists PC  James R Meador Jr. MD  Buena Vista Ophthalmologists PC  Misha Faustina MD  Neuro-Ophthalmology Ltd  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  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  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Barnet Dulaney Perkins Eye Center  Gary Hall Laser Center PC  M Kathleen Carriker MD  Biltmore Eye Physicians PC  Biltmore Eye Physicians PC  Biltmore Eye Physicians PC  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Ophthalmic Surgeons & Physicians Ltd  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Newman Eye Center  Arizona Pediatric Eye Specialists PLC  Drs Ford & Caserta  Drs Ford & Caserta  William McLeish MD LLC  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Dennis C Cooper MD Avondale, 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 Avondale
Nearby Avondale Hospitals *West Valley Hospital Banner Estrella Medical Center Maryvale Hospital Medical Center Banner Boswell Medical Center HEALTHSOUTH Valley of the Sun Rehabilitation Hospital Banner Del E Webb Medical Center Banner Thunderbird Medical Center Phoenix Baptist Hospital Phoenix Memorial Health Care Center Promise Hospital of Phoenix Surgical Specialty Hospital of Arizona Select Specialty Hospital Phoenix St Joseph's Hospital & Medical Center Kindred Hospital Phoenix Banner Good Samaritan Rehabilitation Select Specialty Hospital Phoenix Downtown Carl T Hayden VA Medical Center Banner Good Samaritan Medical Center Arrowhead Hospital St Luke's Behavioral Health Center St Luke's Medical Center Youth Development Institute Phoenix Indian Medical Center Arizona Heart Hospital Phoenix Children's Hospital John C Lincoln Hospital North Mountain Los Ninos Hospital Arizona State Hospital Maricopa Medical Center John C Lincoln Hospital Deer Valley Tempe St Luke's Hospital Paradise Valley Hospital Scottsdale Healthcare Osborn Select Specialty Hospital Scottsdale Banner Behavioral Health Hospital Arizona Orthopedic Surgical Hospital Mayo Clinic Hospital Banner Desert Medical Center Scottsdale Healthcare Shea Kindred Hospital Scottsdale HEALTHSOUTH Scottsdale Rehabilitation Hospital Chandler Regional Hospital Desert Vista Hospital Scottsdale Healthcare Thompson Peak 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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