Electroretinography Center - Lewisville, TX
Lewisville 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 Lewisville * North Dallas Eye Associates  North Dallas Eye Associates  North Dallas Eye Associates  Lee Eye Surgery Clinic  Tennant Institute  LaserCare Eye Center  Las Colinas Ophthalmology Association  Retina Institute of Texas PA  LaserCare Eye Center  LaserCare Eye Center  Retina Institute of Texas PA  David K Gregory MD  Kim K Maale MD  Pediatric Opthalmology PA  Phillips Kirk Labor MD  Alliance Eye Care  Glaucoma Consultants of Texas  Pediatric Ophthalmology PA  Eye Care Associates of Denton  Vista Ophthalmology Associates  George Allen Moninger MD  George Allen Moninger MD  Advanced Eye Care Center  Drs Dharma & Mahatma  Las Colinas Vision Center  Robert Eisenberg MD  Ophthalmology Consultants PA  Tylock Eyecare & Laser Center  Michelle L Brochner MD  Retina Specialists  Retina Specialists  Mayli Davis MD  Roy R Whitaker MD  Gordon H Newman MD  Gordon H Newman MD  James Bentley Jr. MD  Drs Frazee Passmore Swanson & Ahmad  Drs Frazee Passmore Swanson & Ahmad  Eye Surgery of Texas  Joel Leffler MD  Drs Frazee Passmore Swanson & Ahmad  Drs Frazee Passmore Swanson & Ahmad  William Boothe MD  Roger D Nunn MD  Ophthalmology Associates  Namrata M Sayani MD  Thomas L Marvelli MD  Brian S Anding MD  Jacqueline Co MD PA  Robert Scharf MD  Carl K Marling MD  Bob L Pansick MD  Pediatric Eye Specialists  Craig D Smith MD  Rhufus Allen MD  Robert Tenery Jr. MD  Pediatric Ophthalmology PA  Pediatric Ophthalmology PA  Pediatric Ophthalmology PA  Pediatric Ophthalmology PA  Dr's Fagadau & Hawk MD LLP  Dr's Fagadau & Hawk MD LLP  Texas Eye & Laser Center  Texas Eye & Laser Center  MFA Ophthalmology  Merhdad Mazaheri MD  Glaucoma Associates of Texas  Glaucoma Associates of Texas  Glaucoma Associates of Texas  Glaucoma Associates of Texas  Glaucoma Associates of Texas  Craig Bolton MD  Garnett S Payseur MD  Ophthalmology Associates  Ophthalmology Associates  Vision Quest  UT Southwestern Ophthalmology Clinic  Charley J Andrews III MD  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  Dallas Eye Care Associates  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  Vision Quest  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  Vision Quest  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  UT Southwestern Ophthalmology Clinic  Dallas Eye Care Associates  UT Southwestern Ophthalmology Clinic  Lyle R Teska MD Lewisville, TexasUpcoming Local Events2012-06-02
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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 Lewisville
Nearby Lewisville Hospitals *Medical Center of Lewisville Trinity Medical Center Regency Hospital of North Dallas Presbyterian Hospital of Plano Baylor Regional Medical Center at Grapevine Denton Regional Medical Center Irving Coppell Surgical Hospital Baylor Medical Center at Frisco Las Colinas Medical Center LifeCare Hospitals of Plano RHD Memorial Medical Center Baylor Regional Medical Center at Plano Baylor Medical Center at Trophy Club Plano Specialty Hospital Centennial Medical Center Baylor Medical Center at Irving HEALTHSOUTH Plano Rehabilitation Hospital Medical Center of Plano Presbyterian Hospital of Denton Green Oaks Hospital Medical City Children's Hospital Medical City Hospital Methodist Richardson Regional Medical Center Harris Methodist HEB Hospital Harris Methodist Springwood Texas Specialty Hospital at Dallas Children's Medical Center of Dallas Kindred Hospital Dallas Kindred Hospital Walnut Hill Presbyterian Hospital of Dallas LifeCare Specialty Hospital of Dallas UT Southwestern Medical Center University Hospital St Paul Southwest Surgical Hospital UT Southwestern Medical Center Parkland Health & Hospital System UT Southwestern Medical Center University Hospital Zale Lipshy North Hills Hospital Texas Scottish Rite Hospital for Children Mary Shiels Hospital Presbyterian Hospital of Allen Baylor Medical Center at Garland Baylor Specialty Hospital Garland Baylor Specialty Hospital Baylor University Medical Center Kindred Hospital Arlington Millwood Hospital Texas Health Memorial Hospital at Arlington Baylor Jack & Jane Hamilton Heart & Vascular Hospital Arlington Rehabilitation Hospital Baylor Institute for Rehabilitation Methodist Dallas Medical Center Doctors Hospital at White Rock Lake Kindred Hospital White Rock Medical Center of McKinney Medical Center of McKinney Wysong Campus Timberlawn Mental Health System Renaissance Hospital Dallas HEALTHSOUTH Rehabilitation Hospital of Arlington Medical Center of Arlington USMD Hospital at Arlington Dallas VA Medical Center Methodist Charlton Medical Center Methodist Rehabilitation Hospital Select Specialty Hospital South Dallas HEALTHSOUTH Rehabilitation Hospital Harris Continued Care Hospital Harris Methodist Fort Worth JPS Health Network Cook Children's Medical Center Lake Pointe Medical Center Dallas Regional Medical Center Kindred Hospital Fort Worth Plaza Medical Center of Fort Worth Baylor Surgical Hospital at Fort Worth Baylor All Saints Medical Center at Fort Worth 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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