Electroretinography Center - Missouri City, TX
Missouri City 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 Missouri City * Edward K Chan MD  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Texas Eye Institute  Paul M Scott MD PA  Houston Retina Associates  Houston Eye Associates  Harrisburg Eye Clinic  Houston Retina Associates  Houston Eye Associates  Gary Mason MD  Houston Eye Associates  Todays Vision  Sugarland Eye & Laser  Lone Star Eye Care  Lone Star Eye Care  Eye Optical  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Holladay Lasik Institute  Houston Eye Associates  Bellaire & Katy Eye Consultants  Retina Specialists of Houston  Retina Specialists of Houston  Retina Specialists of Houston  Eye Center of Texas LLP  Eye Center of Texas LLP  Mapp & Mapp Associates  Mapp & Mapp Associates  Eye Center of Texas LLP  Eye Center of Texas LLP  Warren Cross & Associates  Warren Cross & Associates  Warren Cross & Associates  Eye Physicians of West Houston  Shirley Mathew MD  Houston Eye Associates  Houston Eye Associates  Kelsey-Seybold Clinic  Retina & Vitreous of Texas  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Retina & Vitreous of Texas  Houston Eye Associates  Retina & Vitreous of Texas  Houston Eye Associates  Kelsey-Seybold Main Campus Ophthalmology  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Houston Eye Associates  Kelsey-Seybold Main Campus Ophthalmology  Houston Eye Associates  Retina & Vitreous of Texas  Houston Eye Associates  Houston Eye Associates  Ophthalmic Plastic Surgery of Texas  Judith T Feigon MD  Zimmerman Medical Clinic  James H Krause MD  Kelsey-Seybold Clinic West  Baylor Eye Consultants  Lawrence A Wright MD  Baylor Eye Consultants  Medical Center Ophthalmology  Eye Excellence  Medical Center Ophthalmology  Medical Center Ophthalmology  UT MD Anderson Cancer Center Ophthalmology  Baylor Eye Consultants  Baylor Eye Consultants  Baylor Eye Physicians & Surgeons  UT MD Anderson Cancer Center Ophthalmology  Baylor Eye Consultants  Baylor Eye Consultants  UT MD Anderson Cancer Center Ophthalmology  Baylor Eye Consultants  Baylor Eye Consultants  Baylor Eye Consultants  Baylor Eye Consultants  Baylor Eye Consultants Missouri City, TexasUpcoming 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 Missouri City
Nearby Missouri City Hospitals *Memorial Hermann Southwest Hospital Riveroaks Medical Center Sharpstown Campus Triumph Hospital Southwest Methodist Sugar Land Hospital West Oaks Hospital Memorial Hermann Sugar Land Hospital Cornerstone Hospital of Houston at Bellaire Healthbridge Children's Hospital of Houston West Houston Medical Center IntraCare Medical Center Hospital Texas Orthopedic Hospital University General Hospital The Woman's Hospital of Texas Harris County Hospital District Shriners Hospitals for Children St Luke's Episcopal Hospital Texas Children's Hospital The Methodist Hospital University of Texas MD Anderson Cancer Center Kindred Hospital Houston Memorial Herman The Institute for Rehabilitation & Research Select Specialty Hospital Houston Medical Center Michael E DeBakey VA Medical Center Ben Taub General Hospital Memorial Hermann Hospital Park Plaza Hospital and Medical Center Plaza Specialty Hospital University of Texas Harris County Psychiatric Center Memorial Hermann Memorial City Hospital Twelve Oaks Medical Center River Oaks Campus Harris Quentin Mease Community Hospital Select Specialty Hospital Houston West Triumph Hospital Town & Country HEALTHSOUTH Hospital for Specialized Surgery Triumph Hospital Houston Central Riverside General Hospital Spring Branch Medical Center St Joseph Medical Center Texas Specialty Hospital Dubuis Hospital of Houston OakBend Medical Center Memorial Hermann Northwest Hospital Select Specialty Hospital Houston Heights CHRISTUS St Catherine Hospital Doctors Hospital of Tidwell Doctors Hospital Parkway Memorial Hermann Southeast Hospital Lyndon B Johnson General Hospital Triumph Hospital North Houston Memorial Hermann Katy Hospital Kindred Hospital Bay Area Bayshore Medical Center Renaissance Hospital Houston Vista Medical Center Hospital of America Cypress Fairbanks Medical Center Hospital North Cypress Medical Center Kindred Hospital Northwest East Houston Regional Medical Center Cornerstone Hospital of Houston at Clearlake Clear Lake Regional Medical Center Clear Lake Rehabilitation Hospital Triumph Hospital Clear Lake Methodist Willowbrook Hospital Triumph Hospital East Houston CHRISTUS St John Hospital Houston Northwest Medical Center TOPS Surgical Specialty Hospital Cypress Creek Hospital HEALTHSOUTH Hospital of Houston IntraCare North Hospital Triumph Hospital Northwest Angleton Danbury Medical Center HEALTHSOUTH Humble Rehabilitation Hospital Memorial Hermann Northeast Tomball Regional Medical Center 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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