Electroretinography Center - Spring Valley, NV
Spring 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 Spring Valley * Westfield Eye Center  Westfield Eye Center  Westfield Eye Center  Westfield Eye Center  Westfield Eye Center  Westfield Eye Center  Zion Eye Institute  Russell P Jayne MD  Mark W Doubrava MD  Southwest Eye Institute  Southwest Eye Institute  Ideal EyeCare  Avista Eye Center  Jack Abrams MD  Nevada Eye & Ear  Nevada Eye & Ear  Lasik Vision Institute  Lasik Vision Institute  Muzaffar H Kirmani MD  Nevada Eye & Ear  Nevada Eye & Ear  Nevada Eye & Ear  Nevada Retina Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  Nevada Institute Of Ophthalmology  Eye Clinic of Las Vegas  Retina Consultants of Nevada  Steven Leibowitz MD  Retina Consultants of Nevada  Southwestern Eye Associates  Retina Consultants of Nevada  Retina Consultants of Nevada  Retina Consultants of Nevada  Retina Consultants of Nevada  Carolyn A Cruvant MD  Las Vegas Retina Specialists  Janice E Eggert MD  Nevada Retina Center  Nevada Eye Care Professionals  Nevada Eye Care Professionals  Nevada Eye Care Professionals  Nevada Eye Care Professionals  Nevada Eye Care Professionals  Wellish Vision Institute  Wellish Vision Institute  Wellish Vision Institute  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  The Shepherd Eye Center  Charles E Graham MD  Eye & Cosmetic Surgery Center of Nevada LLC  Sunset Eye Center  Nevada Eye & Ear Spring Valley, NevadaUpcoming Local Events2012-06-09
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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 Spring Valley
Nearby Spring Valley Hospitals *Montevista Hospital Red Rock Behavioral Health Hospital Spring Valley Hospital Medical Center Rawson Neal Psychiatric Hospital Kindred Hospital Las Vegas Sahara Campus Desert Willow Treatment Center Southern Hills Hospital & Medical Center HEALTHSOUTH Rehabilitation Hospital of Las Vegas St Rose Dominican Hospital San Martin Campus University Medical Center Valley Hospital Medical Center Horizon Specialty Hospital Sunrise Hospital & Medical Center Summerlin Hospital Medical Center HEALTHSOUTH Hospital at Tenaya Desert Springs Hospital Medical Center Harmon Medical & Rehabilitation Hospital Kindred Hospital Las Vegas at Desert Springs Hospital Kindred Hospital Las Vegas Flamingo Campus MountainView Hospital Progressive Hospital North Vista Hospital St Rose Dominican Hospitals Siena Campus HEALTHSOUTH Henderson Rehabilitation Hospital Mike O'Callagan Federal Hospital St Rose Dominican Hospitals Rose de Lima Campus Boulder City 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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