Electroretinography Center - Prescott, AZ
Prescott 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 Prescott * Kokopelli Eye Care PC  Prescott Eye Care & Surgical Center PC  Prescott Eye Care & Surgical Center PC  Rummel Eye Care PC  Rummel Eye Care PC  Rummel Eye Care PC  Rummel Eye Care PC  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Clear Vision Eye Institute  Arizona Eye Institute & Cosmetic Laser Center  Walman Eye Center  Banner Arizona Medical Clinic Dermatology & Ophthalmology  Banner Arizona Medical Clinic Dermatology & Ophthalmology  Banner Arizona Medical Clinic Ophthalmology, Neurology & Psychiatry  Susan A Briceland MD  Susan A Briceland MD  Arizona Pediatric Eye Specialists PLC  Barnet Dulaney Perkins Eye Center  Warren H Victor MD  Kenneth A Batko MD  Associated Retina Consultants LTD  Southwestern Eye Center  Southwestern Eye Center  Elizabeth V Tukan MD  Cornea Consultants of Arizona  Desert Eye Specialists LTD  Cornea Consultants of Arizona  Charles J Hofer MD  Jon S Jacobson MD  Plaza Del Rio Eye Clinic  Arrowhead Eye Center  Plaza Del Rio Eye Clinic  Parminderpal Singh MD  Banner Arizona Medical Clinic Ophthalmology, Neurology & Psychiatry  Cornea Consultants of Arizona  Desert Eye Specialists LTD  Valley Retina Surgeons  George R Reiss MD PC  George R Reiss MD PC  Newman Eye Center  Carriker Eye Center  Oculoplastic Consultants of Arizona  Robert Rubenzik MD  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Valley Eye Specialists  Valley Eye Specialists  Associated Ophthalmologists Ltd  Valley Eye Specialists  Desert Ridge Eye  Glaucoma Specialists  Southwestern Eye Center  Southwestern Eye Center  Southwestern Eye Center  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Affiliated Eye Surgeons  Grayhawk Eye Center PLLC  Arizona Pediatric Eye Specialists PLC  Horizon Eye Specialist & Lasik Center  Horizon Eye Specialist & Lasik Center  Horizon Eye Specialist & Lasik Center  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Risser -Thomas Eye Clinic  Robert L Mahanti MD  Barnet Dulaney Perkins Eye Center  Phoenix Ophthalmologists PA  Phoenix Ophthalmologists PA  Arizona Pediatric Eye Specialists PLC  Arizona Pediatric Eye Specialists PLC  Associated Ophthalmologists Ltd  Associated Ophthalmologists Ltd  Clear Vision Ophthalmology PC  Paul M Petelin Jr MD  David R Johnson MD  Schwartz Laser Eye Center  Schwartz Laser Eye Center  Schwartz Laser Eye Center  Richard Isenberg MD  Associated Eye Specialists  Associated Eye Specialists  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  Associated Ophthalmologists Ltd  Brems Eye Center  Buena Vista Ophthalmologists PC  Affiliated Eye Surgeons  James R Meador Jr. MD  Buena Vista Ophthalmologists PC Prescott, ArizonaUpcoming Local Events2012-06-03
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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 Prescott
Nearby Prescott Hospitals *Northern Arizona VA Health Care System Yavapai Regional Medical Center Verde Valley 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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