Electroretinography Center - North Port, FL
North Port 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 North Port * Nash Cataract & Laser Institute  Nash Cataract & Laser Institute  Nash Cataract & Laser Institute  David M Klein MD  Charles Gremillion MD  Retina Consultants of Southwest Florida  Retina Consultants of Southwest Florida  Retina Consultants of Southwest Florida  Retina Consultants of Southwest Florida  Retina Consultants of Southwest Florida  Alan J Knapp MD  Alan J Knapp MD  Neil B Zusman MD  Richard A Conroy MD  Provision Laser Eye Center  Richard A Conroy MD  Donald A McEachern MD  Center for Sight  Center for Sight  Center for Sight  Ophthalmic Consultants  Christopher Stelly MD  Institute For Advanced Medicine  Manatee Sarasota Eye Clinic  Sarasota Cataract & Laser Institute  Gulf Coast Glaucoma Clinic  Gulf Coast Glaucoma Clinic  Sarasota Retina Institute  Sarasota Retina Institute  Sarasota Retina Institute  Sarasota Retina Institute  Kantor Institute & Laser Center  Kantor Institute & Laser Center  Kantor Institute & Laser Center  Kantor Institute & Laser Center  Ophthalmic Consultants  Palm Coast Eye Center PA  Center for Sight  Center for Sight  Sarasota Ophthalmology Associates  Sarasota Ophthalmology Associates  Strom Eye Center  Thomas L Schwartz MD  Manatee Sarasota Eye Clinic  Marion L Coats MD  Manatee Sarasota Eye Clinic  Manatee Sarasota Eye Clinic  Marc A Grinberg MD  Eye Specialist  Scot E Lance MD  Manatee Sarasota Eye Clinic  Thomas L Schwartz MD  Manatee Sarasota Eye Clinic  Karen L Chapman MD  Gary J Pearce MD  Richard K Marschner Jr. MD  Southwest Florida Eye Care  Southwest Florida Eye Care  Cataract & Refractive Institute  Eye Health of Fort Myers Inc  Adler Eye Institute  Bradenton Eye Clinic  Florida Eye Health  Florida Eye Health  Cape Coral Eye Center  Cape Coral Eye Center  Manatee Sarasota Eye Clinic  Manatee Sarasota Eye Clinic  Cape Coral Eye Center  Eye Depot  Eye Depot  Charles Eugene Cox MD  R Thad Goodwin MD PA  Gary M Pullias MD  Valerie Crandall MD & Associates  South Florida Eye Clinic  Optical Shoppe  Eye Centers of Florida  Eye Centers of Florida  Retina Health Center  Retina Health Center  Eye Associates of Fort Myers  Eye Associates of Fort Myers  Eye Health of Fort Myers Inc  Eye Health of Fort Myers Inc  Elmquist Eye Group  John W Snead MD  Gorovoy MD Eye Specialists  Pierre Bourgon MD  West Coast Eye Care  Oculoplastics of Southwest Florida  Azul Cosmetic Surgery & Medical Spa  Collins Vision  Eye Specialists of Mid Florida PC  Kaufman Eye Institute  Brandon Cataract Center & Eye Clinic  Kaufman Eye Institute  Brandon Cataract Center & Eye Clinic  Brandon Cataract Center & Eye Clinic  Brandon Cataract Center & Eye Clinic North Port, FloridaUpcoming 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 North Port
Nearby North Port Hospitals *Englewood Community Hospital Fawcett Memorial Hospital Peace River Medical Center Venice Regional Medical Center Charlotte Regional Medical Center Riverside Behavioral Center HEALTHSOUTH Rehabilitation Hospital of Sarasota Doctors Hospital of Sarasota Sarasota Memorial Hospital Bayside Center for Behavioral Health De Soto Memorial Hospital Lakewood Ranch Medical Center Cape Coral 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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