Electroretinography Center - Honolulu, HI
Honolulu 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 Honolulu * Straub Clinic & Hospital King Street  Straub Clinic & Hospital King Street  Straub Clinic & Hospital King Street  Straub Clinic & Hospital King Street  Straub Clinic & Hospital King Street  Retina Center Of Hawaii  Retina Associates Of Hawaii Inc  The Oculoplastics Center  George Plechaty MD  Drs Portis & Sugiki  Steven S. Sameshima, MD  Rhoads E Stevens MD  Drs Portis & Sugiki  Honolulu Eye Clinic  Honolulu Eye Clinic  Percival Chee MD  Ming Chen MD  Stephen S Gee MD  Kaiser Permanente Honolulu Clinic Ophthalmology  Kaiser Permanente Honolulu Clinic Ophthalmology  Kaiser Permanente Honolulu Clinic Ophthalmology  Allan R Kunimoto MD  Kaiser Permanente Honolulu Clinic Ophthalmology  Minatoya Eye Clinic  Minatoya Eye Clinic  Kaiser Permanente Honolulu Clinic Ophthalmology  Kaiser Permanente Honolulu Clinic Ophthalmology  Kaiser Permanente Honolulu Clinic Ophthalmology  Kaiser Permanente Honolulu Clinic Ophthalmology  Kaiser Permanente Honolulu Clinic Ophthalmology  Stephen E Clason MD  Tyrie Lee Jenkins MD  Lorene Anastasi MD  Cataract & Vision Center  Retina Consultants of Hawaii Inc  Retina Consultants of Hawaii Inc  Cataract & Vision Center  Gilbert K Yamamoto MD  Ohana Eye Center  Aesthetic Vision Center  Marshall Kim MD  Ken C Lin MD  Laser & Eye Surgery Center  Dennis I Maehara MD  Dennis I Maehara MD  Calvin M Miura MD Inc  Byron M Wong MD  Byron M Wong MD  Malcolm R Ing MD  Peggy M Liao MD  David A Young MD  Retina Institute of Hawaii  Camara Eye Clinic  Margaret Cheung MD  Pacific Eye Surgery Center  Aloha Vision Consultants  John D Olkowski MD  Tripler Army Medical Center  Aina Haina Eye Center  Island Eye Center  Island Eye Center  Luis C Omphroy MD LLC  Aiea Vision Clinic  Windward Physicians & Surgeons  Windward Physicians & Surgeons  Windward Physicians & Surgeons  Troy M Tanji MD  McMann Eye Institute  Carlos Omphroy MD  Hawaiian Eye Center  Kapolei Eye Care  Maui Medical Group Inc  Aloha Eye Clinic  Aloha Eye Clinic  Aloha Eye Clinic  Kaiser Permanente Maui Wailuku Clinic  Kaiser Permanente Maui Wailuku Clinic Honolulu, HawaiiHonolulu is the capital of and the most populous census-designated place (CDP) in the U.S. state of Hawaii. Although Honolulu refers to the urban area on the southeastern shore of the island of Oahu, the city and the county are consolidated, known as the City and County of Honolulu, and the city and county is designated as the entire island. The City and County of Honolulu is the only incorporated city in Hawaii, as all other local government entities are administered at the county level. In the Hawaiian language, Honolulu means "sheltered bay" or "place of shelter." Upcoming Local Events2012-06-17
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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 Honolulu
Nearby Honolulu Hospitals *Queen's Medical Center Straub Clinic & Hospital Rehabilitation Hospital of the Pacific Kuakini Medical Center Kapiolani Medical Center for Women & Children Shriners Hospital for Children Hawaii Medical Center East Le'ahi Hospital Tripler Army Medical Center Kaiser Permanente Moanalua Medical Center Castle Medical Center Hawaii State Hospital Kapiolani Medical Center at Pali Momi Kahi Mohala Behavioral Healthcare Hawaii Medical Center West Wahiawa General Hospital Kahuku 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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