Electroretinography Center - Minnetonka, MN
Minnetonka 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 Minnetonka * Consultative Eye Care  Consultative Eye Care  Consultative Eye Care  Northwest Eye Clinic PA  Northwest Eye Clinic PA  Northwest Eye Clinic PA  Northwest Eye Clinic PA  Northwest Eye Clinic PA  Northwest Eye Clinic PA  Northwest Eye Clinic PA  Northwest Eye Clinic PA  VitreoRetinal Surgery PA  Minnesota Eye Consultants PA  VitreoRetinal Surgery PA  West Metro Ophthalmology PA  VitreoRetinal Surgery PA  Minnesota Eye Consultants PA  West Metro Ophthalmology PA  West Metro Ophthalmology PA  VitreoRetinal Surgery PA  Minnesota Eye Consultants PA  VitreoRetinal Surgery PA  Minnesota Eye Consultants PA  West Metro Ophthalmology PA  VitreoRetinal Surgery PA  Park Nicollet Clinic Chanhassen  Park Nicollet Clinic St Louis Park Ophthalmology  Park Nicollet Clinic St Louis Park Ophthalmology  Park Nicollet Clinic St Louis Park Ophthalmology  Park Nicollet Clinic St Louis Park Ophthalmology  Park Nicollet Clinic St Louis Park Ophthalmology  Park Nicollet Clinic St Louis Park Ophthalmology  Park Nicollet Clinic St Louis Park Ophthalmology  HealthPartners Como Clinic  HealthPartners Bloomington Clinic  HealthPartners West Clinic  West Metro Ophthalmology PA  West Metro Ophthalmology PA  Edina Eye Clinic PA  Edina Eye Clinic PA  Edina Eye Clinic PA  Edina Eye Clinic PA  Edina Eye Physicians & Surgeons  Edina Eye Physicians & Surgeons  Edina Eye Physicians & Surgeons  Edina Eye Physicians & Surgeons  Edina Eye Physicians & Surgeons  Minnesota Ophthalmic Plastic Surgery Specialists  Minnesota Ophthalmic Plastic Surgery Specialists  Jonathan E Pederson MD  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Ophthalmology Associates  Edina Eye Physicians & Surgeons  Northwest Eye Clinic PA  VitreoRetinal Surgery PA  VitreoRetinal Surgery PA  Northwest Eye Clinic PA  VitreoRetinal Surgery PA  Ophthalmology PA  Ophthalmology PA  Ophthalmology PA  Ophthalmology PA  Ophthalmology PA  Eye Care Associates PA  Eye Care Associates PA  Eye Care Associates PA  Eye Care Associates PA  Eye Care Associates PA  Eye Care Associates PA  Eye Care Associates PA  Eye Care Associates PA  Retina Center  Minneapolis Medical Eye Clinic  Retina Center  Retina Center  Minnesota Eye Consultants PA  Lawrence H Quist MD  Minneapolis Medical Eye Clinic  Minnesota Eye Consultants PA  Minnesota Eye Consultants PA  Hennepin Faculty Associates Eye Clinic  Minnesota Eye Consultants PA  Hennepin Faculty Associates Eye Clinic  Hennepin Faculty Associates Eye Clinic  Hennepin Faculty Associates Eye Clinic  HealthPartners Bloomington Clinic  Aspen Medical Group Bloomington  University of Minnesota Ophthalmology Dept  University of Minnesota Ophthalmology Dept  University of Minnesota Ophthalmology Dept  University of Minnesota Ophthalmology Dept  University of Minnesota Ophthalmology Dept  University of Minnesota Ophthalmology Dept Minnetonka, MinnesotaUpcoming 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 Minnetonka
Nearby Minnetonka Hospitals *Methodist Hospital Fairview Southdale Hospital Regency Hospital of Minneapolis North Memorial Medical Center Abbott Northwestern Hospital Phillips Eye Institute Sister Kenny Rehabilitation Institute Children's Hospitals and Clinics Minneapolis Hennepin County Medical Center University of Minnesota Medical Center Fairview Riverside Campus St Francis Regional Medical Center University of Minnesota Medical Center Fairview University Campus Shriners Hospital for Children Twin Cities Minneapolis VA Medical Center Fairview Maple Grove Medical Center Unity Hospital Fairview Ridges Hospital Children's Hospitals and Clinics St Paul United Hospital St Joseph's Hospital Ridgeview Medical Center Mercy Hospital Bethesda Rehabilitation Hospital Saint Paul Gillette Children's Specialty Healthcare Regions Hospital Anoka-Metro Regional Treatment Center St John's Hospital Woodwinds Health Campus Buffalo Hospital Queen of Peace Hospital Monticello-Big Lake Hospital Regina Medical Center Lakeview Hospital Fairview Lakes 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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