What is an electrical engineering?
Electroretinography (ERG) is a procedure in which the retinal sensitivity to light is measured by recording the electrical responses generated inside the eye when exposed to an impulse. This test is usually ordered when the doctor suspects that the patient has retinal disorder, whether or her congenital. It is a relatively low risk of performing an experienced technician and can even be carried out in children and infants, although sedation may be required in younger patients to avoid moving during testing. The pupils are extended by the eyes and the eye is applied to the eye so that the electrode can be finely placed on the cornea, while another electrode is located near the eye. To prevent the patient's flashing, the eye is held open with a speculation and the lubricant is applied to minimize discomfort. Then the patient is exposed to a set of standardized stimuli aelectric reactions are recorded. This part of the electrical screening tests rods, retina sensitive components, unlike cones, retinal structureCI that are sensitized to color. Once the test is completed, the electrodes can be removed and the patient may be allowed to sit again.
The results are available immediately in the form of a deduction of generated electrodes. Electroretinography can reveal disorders that cover the entire retina and provide more information about the retina function. However, this test is not suitable for finding things such as macular degeneration, which includes only a small area of retina. After creating an electroretinogram, another screening may be needed about what is happening inside the patient's eyes.
Patients should prepare for a test that will take about an hour from start to finish. Since the eyes are still widespread at the end of the exam, it is recommended to ensure the ride of home with a friend or family member, as it can be dangerous to drive and navigate public transport when the eyes are very sensitive to light. PatientThey should also avoid touching their eyes for at least an hour after the test and reporting any complications of electroretinography, such as pain or scratches on the cornea, their doctors.