OCT-A technology uses a laser beam that reflects back from red blood cells moving in the blood vessel. If there is no movement or blood flow in the blood vessels, an image of the blood vessels cannot be obtained. The method is used in particular for the diagnosis of diabetic retinopathy, thrombosis, and the wet form of AMD.
The examination procedure is not painful or uncomfortable, and it only takes a little longer than regular OCT. The contrast agent is not injected, which makes this form of angiography significantly safer than conventional fluorescein angiography (FAG/FA).
Unfortunately, the OCT-A method is not always sufficient to diagnose diseases, and a FAG must still be performed.
Fluorescence angiography (FAG) or fluorescein angiography of the ocular fundus, is a diagnostic procedure in which the fundus is imaged and the retina and blood vessels are mapped. The procedure can detect a variety of pathological processes, such as vascular disease-indicative changes, bruising, edema, and neoplasms.
To discover possible haemorrhage or blockage sites of blood vessels in the eye.
Your pupils will be dilated and prior to having the angiography normal photographs will be taken of the back of the eye. Dye will be injected into your bloodstream through either your forearm or the back of your hand. Approximately 15 seconds after the injection the dye will reach the blood vessels in the back of your eye. With a special camera the journey of the dye will be recorded and monitored.
This procedure will take approximately 1 hour.
Please inform us in regards to any allergies and all the medications that you are currently taking. This procedure requires pupil dilation so your vision will be distorted for 1 hour during which you should avoid driving a motor vehicle.
