Electrophysiologic retinal testing: Testing done to diagnose specific disorders of the retina , including inherited retinal diseases, the effects of toxic drug exposure on the retina, and the presence of foreign bodies within the eye .

The most commonly performed electrophysiologic test is the electroretinogram (ERG). Other electrophysiologic tests include electro-oculography (EOG), visual evoked response (VER), dark adaptometry , and special color vision testing.

The ERG measures the electrical response of the retina to flashes of light. The EOG measures the difference in the electrical potential between the front and back of the eye in response to dark and light. The VER measures the electrical potential resulting from a visual stimulus. Dark adaptometry measures the period of time which passes before the retina regains its maximal sensitivity to low amounts of light when going from conditions of bright light to darkness.

How to Order  |  Price List  |  Refill Orders
Home  |  About Us  |  Contact Us  |  FAQ

Buy cheap canadian prescriptions from a Canadian Internet Pharmacy leader. cheap online pharmacy canadian pharmacy prescription drugs online discount medicine pharmacies online mail order prescription medication canadian online pharmacy search for online drugs canada pharmacies discount canadian medication drugstore Plavix Fosamax Lipitor Celebrex Actonel Flomax Glucophage Premarin Prevacid Evista .