Electroretinography Center - Largo, FL
Largo 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 Largo * St Michael's Eye & Laser Institute  St Michael's Eye & Laser Institute  Older & Slonim Eyelid Institute  Eye Institute of West Florida  Shettle Eye Center  Shettle Eye Center  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Eye Institute of West Florida  Diagnostic Clinic Largo  Diagnostic Clinic Largo  Thomas A Caleca MD  Peter Smith MD  Lazenby Eye Care Center  Lazenby Eye Care Center  Lazenby Eye Care Center  The Retina Institute  Bay Area Retina Consultants  Bay Area Retina Consultants  Eye Site of Tampa Bay  Eye Site of Tampa Bay  Eye Site of Tampa Bay  Retina Vitreous Associates of Florida  Geoffrey M Kwitko MD  Debra A Thomas-Weible MD  Behler Eye & Laser Center  Winston Cope MD  Barlis Cataract & Eyecare Center  Kurt B Repke MD  Tampa Bay Neuroophthalmology  Pinellas Eye Care  Don B Knapp II MD  Tampa Eye Clinic  Tampa Eye Clinic  Tampa Eye Clinic  Lawrence R Goldberg MD  The Eye Center  Bruce A Ungerleider MD  Gulf Coast Eye Care  Gulf Coast Eye Care  The Macula Center  Steven A Gross MD  David Rothberg MD  Harry Kolodner MD  Retina Vitreous Associates of Florida  Updegraff Vision  Updegraff Vision  Lawrence G Kass MD  Sun Coast Eye Clinic  Sun Coast Eye Clinic  Sun Coast Eye Clinic  Sun Coast Eye Clinic  Sun Coast Eye Clinic  Florida Eye Center  Florida Eye Center  Florida Eye Center  Florida Eye Center  The Retina Institute  Robert S Nelson MD  Mendelblatt Mendelblatt & Bell MDs  Mendelblatt Mendelblatt & Bell MDs  J Bruce Hess MD & Derek B Hess MD  J Bruce Hess MD & Derek B Hess MD  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  St Luke's Cataract & Laser Institute  Tampa Cataract & Eye Care Center  Westchase Ophthalmology  Perich Eye Center  Tampa Eye Clinic  Tampa Eye Clinic  Tampa Eye Clinic  Tampa Eye Clinic  Tampa Eye Clinic  Tampa Eye Clinic  Tampa Eye Clinic  Guggino Family Eye Center  Guggino Family Eye Center  Guggino Family Eye Center  Guggino Family Eye Center  Retina Associates of Florida  Retina Associates of Florida  Retina Associates of Florida  Steven L Maskin MD PA  Retina Vitreous Associates of Florida Largo, 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 Largo
Nearby Largo Hospitals *HEALTHSOUTH Rehabilitation Hospital of Largo Largo Medical Center Sun Coast Hospital Morton Plant Hospital Windmoor Healthcare of Clearwater Mease Dunedin Hospital Bay Pines VA Healthcare System Mease Countryside Hospital Northside Hospital & Tampa Bay Heart Institute St Petersburg General Hospital Palms of Pasadena Hospital Edward White Hospital St Anthony's Hospital All Children's Hospital Bayfront Medical Center Town & Country Hospital Helen Ellis Memorial Hospital Kindred Hospital St Petersburg Kindred Hospital Tampa University Community Hospital Carrollwood Memorial Hospital of Tampa St Joseph's Women's Hospital St Joseph's Children's Hospital of Tampa St Joseph's Hospital Kindred Hospital Central Tampa Tampa General Hospital Community Hospital of New Port Richey Shriners Hospital for Children Morton Plant North Bay Hospital James A Haley VA Medical Center H Lee Moffitt Cancer Center & Research Institute University Community Hospital South Bay Hospital Brandon Regional Hospital Regional Medical Center Bayonet Point Blake Medical Center Manatee Memorial Hospital Manatee Palms Youth Services Manatee Glens 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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