Electroretinography Center - Lompoc, CA
Lompoc 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 Lompoc * Steven W Dixon MD  Wallace S Marsh MD  Kendall-Shepard Eye Center  Kendall-Shepard Eye Center  Limberg Eye Surgery  Limberg Eye Surgery  Pacific Eye Surgeons  Pacific Eye Surgeons  Pacific Eye Surgeons  Pacific Eye Surgeons  Pacific Eye Surgeons  Pacific Eye Surgeons  California Retina Consultants  California Retina Consultants  California Retina Consultants  Shepard Eye Center  Shepard Eye Center  Shepard Eye Center  Marc A Lowe MD  Norman J Hoffman MD Inc  Limberg Eye Surgery  Limberg Eye Surgery  Janet Chen MD  San Luis Obispo Eye Associates  San Luis Obispo Eye Associates  San Luis Obispo Eye Associates  San Luis Obispo Eye Associates  San Luis Obispo Eye Associates  Associated Eye Specialists Medical Group Inc  Limberg Eye Surgery  Retina Specialists of the Central Coast  Retina Specialists of the Central Coast  Pacific Eye Surgeons  Wilson C Wu  Steven D Zelko MD  Sansum Clinic Ophthalmology  California Eye Consultants  Paveloff Vision Center  California Retina Consultants  Eye Surgical Medical Group  Sansum Clinic Ophthalmology  Sansum Clinic Ophthalmology  Roger Kohn MD  California Retina Consultants  Sansum Clinic Ophthalmology  Stuart R Winthrop MD  Sani Eye Center  Sani Eye Center  Christopher S Hulburd MD Inc  Miramar Eye Specialists  Miramar Eye Specialists  Miramar Eye Specialists  Miramar Eye Specialists  The Laser Eye Center of Ventura County  Miramar Eye Specialists  Steven D Chang MD Inc  Ventura Ophthalmology Medical Group  Jeffrey K Luttrull MD  Samuel A Bern MD  Spencer Eye Center  Spencer Eye Center  Frank Meronk Jr. MD  Sunshine Eye Services  Sanjay Logani MD  Coastal Eye Specialists  Coastal Eye Specialists  Kaiser Specialty Clinic Lompoc, CaliforniaUpcoming Local Events2012-05-26
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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 Lompoc
Nearby Lompoc Hospitals *Lompoc Valley Medical Center Santa Ynez Valley Cottage Hospital Marian Medical Center Santa Barbara Cottage Hospital Arroyo Grande Community 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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