Electroretinography Center - Reading, PA
Reading 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 Reading * Eye Consultants of Pennsylvania  Eye Consultants of Pennsylvania  Eye Consultants of Pennsylvania  Eye Consultants of Pennsylvania  Eye Consultants of Pennsylvania  Eye Consultants of Pennsylvania  Berks Eye Physicians & Surgeons Ltd  Berks Eye Physicians & Surgeons Ltd  Berks Eye Physicians & Surgeons Ltd  Berks Eye Physicians & Surgeons Ltd  Christina M Ohnsman MD  Progressive Vision Institute Eye Care Center  Carim Eye & Retina Center Ltd  Carim Eye & Retina Center Ltd  Progressive Vision Institute Eye Care Center  Progressive Vision Institute Eye Care Center  Progressive Vision Institute Eye Care Center  Progressive Vision Institute Eye Care Center  Carim Eye & Retina Center Ltd  Campanella & Pearah Eye Care Associates  Campanella & Pearah Eye Care Associates  Campanella & Pearah Eye Care Associates  Harry W Buchanan IV MD  Persila V Mertz MD  Family Eye Group  Family Eye Group  Family Eye Group  Family Eye Group  Thomas L Manzo MD PC  Sanatoga Ophthalmology Associates  Sanatoga Ophthalmology Associates  Justin L Cappiello MD  James W Judge MD  Kremer Eye Center  Levin & Luminais Eye Associates  Levin & Luminais Eye Associates  Arthur B Belson MD  Paul H Schenck MD  Eye Health Physicians of Lancaster  Chester County Eye Care  Chester County Eye Care  Chester County Eye Care  Chester County Eye Care  Progressive Vision Institute Eye Care Center  Eye Group of Lancaster County Ltd  Jeffrey H Chaby DO  Phoenixville Ophthalmic Associates  Phoenixville Eye Care Specialists  Phoenixville Eye Care Specialists  Collegeville Eye Physicians and Surgeons  Lehigh Retina Specialists  Eye Associates Of Lancaster Ltd  Eye Associates Of Lancaster Ltd  Eye Associates Of Lancaster Ltd  Eye Associates Of Lancaster Ltd  Ophthalmological Associates of Lancaster  Lisa S Bunin MD  Dr Albert Alley & Associates  Dr Albert Alley & Associates  Lebanon Ophthalmic Associates  Chester County Eye Care  Fava & Maria Eye Associates  Eye Physicians of Lancaster  Fava & Maria Eye Associates  Mudgil Eye Associates  David L Streisfeld MD  Chester County Eye Care  Joseph Kavchok Jr. MD  Vistarr Laser & Vision Center  Vistarr Laser & Vision Center  Vistarr Laser & Vision Center  Vistarr Laser & Vision Center  Roy D Brod MD  Campus Eye Center  Campus Eye Center  Central Pennsylvania Eye Institute  Family Eye Group  Campus Eye Center  Lehigh Valley Eye Center PC  Lehigh Valley Eye Center PC  Harvey S Cheng MD  Harold J Goldfarb MD  Harry W Buchanan IV MD  Lehigh Valley Eye Center PC  Lehigh Valley Eye Center PC  Lehigh Valley Eye Center PC  Lehigh Valley Eye Center PC  Lehigh Valley Eye Center PC  Lehigh Valley Eye Center PC  Lehigh Valley Center For Sight  Bausch & Jones Eye Associates  Bausch & Jones Eye Associates  Lehigh Valley Center For Sight  Lehigh Valley Center For Sight  Lehigh Valley Center For Sight  Samuel H Galib MD  Carty Eye Associates  Don G Koepsell MD  Pediatric Eye Phys & Surgeons  Eve Care Group of Lancaster Reading, PennsylvaniaUpcoming 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 a visual field test?A visual field test is a method of measuring an individual's entire scope of vision, that is their central and peripheral (side) vision. Visual field testing actually maps the visual fields of each eye individually. The visual field test is a subjective examination, requiring the patient to understand the testing instructions, fully cooperate, and complete the entire test in order to provide useful information. What is a visual field test used for?Visual field testing is most frequently used to detect any signs of glaucoma damage to the optic nerve. In addition, visual field tests are useful for detection of central or peripheral retinal disease, eyelid conditions such as ptosis or drooping, optic nerve disease, and diseases affecting the visual pathways within the brain. The visual pathways carry information from the eye to the visual or occipital cortex in the brain, where this information is proces... Other Related Electroretinography ArticlesEmergency Contact for Reading
Nearby Reading Hospitals *The Reading Hospital & Medical Center HEALTHSOUTH Reading Rehabilitation Hospital St Joseph Medical Center Wernersville State Hospital Ephrata Community Hospital Pottstown Memorial Medical Center Brandywine Hospital Coatesville VA Medical Center Heart of Lancaster Regional Medical Center Lebanon VA Medical Center Saint John Vianney Hospital The Good Samaritan Hospital KidsPeace Children's Hospital Phoenixville Hospital Lehigh Valley Hospital Cedar Crest Schuylkill Medicall Center South Jackson Street Schuylkill Medical Center East Norwegian Street Lancaster General Hospital Philhaven Lancaster General Women & Babies Hospital St Luke's Hospital Allentown Campus Lancaster Regional Medical Center Lancaster Rehabilitation Hospital Malvern Institute Lehigh Valley Hospital 17th & Chew Streets Good Shepherd Rehabilitation Hospital Allentown Eagleville Hospital Paoli Hospital The Chester County Hospital Bryn Mawr Rehabilitation Hospital LifeCare Hospitals of Chester County Sacred Heart Hospital St Luke's Quakertown Hospital Devereux Beneto Children's Behavioral Health Center Grand View Hospital Valley Forge Medical Center & Hospital Allentown State Hospital Montgomery County Emergency Service St Luke's Miners Memorial Hospital Norristown State Hospital St Luke's Hospital Bethlehem Campus Westfield Hospital Montgomery Hospital Good Shepherd Home Bethlehem Lehigh Valley Hospital Muhlenberg 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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