Electroretinography Center - Leominster, MA
Leominster 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 Leominster * Tad D Baum MD  Retina Consultants of Worcester  New England Eye Center  New England Eye Center  New England Eye Center  New England Eye Center  New England Eye Center  New England Eye Center  D'Ambrosio Eye Care  D'Ambrosio Eye Care  D'Ambrosio Eye Care  D'Ambrosio Eye Care  Valley Eye Physicians & Surgeons  Valley Eye Physicians & Surgeons  Valley Eye Physicians & Surgeons  Valley Eye Physicians & Surgeons  Amrik Pabley MD  Dennis Arinella MD  Edward L Kazarian MD  Rice Ophthalmology Associates  Dennis Arinella MD  Gardner Eye Associates  Fallon Clinic Ophthalmology  Fallon Clinic Ophthalmology  Fallon Clinic Ophthalmology  Fallon Clinic Ophthalmology  Fallon Clinic Ophthalmology  Fallon Clinic Ophthalmology  Robert Gise MD  Worcester Ophthalmology Assoc  Worcester Ophthalmology Assoc  Worcester Ophthalmology Assoc  Meltzer Eye Care Center  Meltzer Eye Care Center  Worcester Ophthalmology Assoc  Vitreo-Retinal Associates Worcester  Worcester Eye Consultants  Eye Physicians of Marlborough  Eye Physicians of Marlborough  Denis J Fitzgerald MD  Eye Surgeons PC  Jeffrey D Levine MD  Keamy Eye & Laser Centre  Family Eye Care Center  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Massachusetts Eye Associates  Massachusetts Eye Associates  Massachusetts Eye Associates  Stephen J Poor III MD PC  Massachusetts Eye Associates  Massachusetts Eye Associates  Ophthalmic Consultants Of Boston  The Eye Center  Ophthalmic Consultants Of Boston  Ophthalmic Consultants Of Boston  Pediatrics and Adult Ophthalmics  Pediatrics and Adult Ophthalmics  Pediatrics and Adult Ophthalmics  Milford Eye Care  Retina Eye Care  Merrimack Eye Clinic  Bruce Gillers MD  Eye & Lasik Center  Eye & Lasik Center  Hugh Cooper MD  Robert J Austin Jr. MD  Ophthalmic Consultants Of Boston  Ophthalmic Consultants Of Boston  Ophthalmic Consultants Of Boston  Talamo Laser Eye Consultants  Children's Hospital Boston Ophthalmology  Children's Hospital Boston Ophthalmology  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Lexington Eye Associates  Southbridge Ophthalmic Assoc  Dornfeld Eye Center  Putnoi Putnoi & Richler MDs  Putnoi Putnoi & Richler MDs  Putnoi Putnoi & Richler MDs  Children's Hospital Boston Ophthalmology  Children's Hospital Boston Ophthalmology  New England Eye Center  Kornmehl Laser Eye Associates  Robert H Gushard MD  Daher Vision  Newton-Wellesley Eye Associates  Miriam Dougherty MD  Eye Care and Laser Surgery  Newton-Wellesley Eye Associates  Eye Care and Laser Surgery Leominster, MassachusettsUpcoming 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 Leominster
Nearby Leominster Hospitals *HealthAlliance Hospital Leominster Campus Health Alliance Burbank Hospital UMass Memorial Clinton Hospital Nashoba Valley Medical Center Heywood Hospital UMass Memorial Marlborough Hospital UMass Memorial Medical Center University Campus Westborough State Hospital Adcare Hospital of Worcester Worcester State Hospital UMass Memorial Medical Center Memorial Campus St Vincent Hospital at Worcester Medical Center Fairlawn Rehabilitation Hospital Whittier Rehabilitation Hospital Westborough St Joseph Hospital Emerson Hospital Southern New Hampshire Medical Center HC Solomon Mental Health Center Lowell General Hospital Athol Memorial Hospital MetroWest Medical Center Framingham Union Hospital Saints Medical Center Edith Nourse Rogers Memorial Veterans Hospital Monadnock Community Hospital Kindred Specialty Hospital Natick MetroWest Medical Center Leonard Morse Hospital Lahey Clinic Medical Center Tewksbury Hospital Newton Wellesley Hospital Milford Regional Medical Center Crotched Mountain Rehabilitation Center McLean Hospital HEALTHSOUTH New England Rehabilitation Hospital Baystate Mary Lane Hospital Beth Israel Deaconess Hospital Needham Isham Health Center Winchester Hospital Parkland Medical Center Caritas Holy Family Hospital and Medical Center Caritas St Elizabeth's Medical Center Lawrence General Hospital Mount Auburn Hospital Northeast Rehabilitation Health Network Franciscan Hospital for Children Kindred Hospital Boston Lawrence Memorial Hospital Harrington Memorial Hospital Somerville Hospital Hubbard Regional Hospital VA Boston Healthcare System West Roxbury Campus Arbour HRI Hospital Bournewood Hospital Youville Hospital and Rehabilitation Center Cambridge Hospital Westwood Lodge 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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