No changes necessary. No changes necessary. You may be asked not to take this medication before the test. Report any severe burning. With OPG-Gee, you may experience a temporary loss of vision when suction is applied to the eyes.
Discomfort disappears when the test is finished.
Equipment used Oculoplethysmograph or oculopneumoplethysmograph. Anesthetic eye drops are put in both eyes. These detect blood flow to the ear through the external carotid artery. Eyecups similar to contact lenses are applied to the cornea of the eyes. Tracings of pulsations are recorded.