It is a classic technique of n eye exam but it is still essential to know how blood moves through the retina and choroid.
What is it?
It is a diagnostic technique used to evaluate ophthalmic diseases in the back of the eye (retina and choroid). It involves injecting a substance "Contrast" (Fluorescein Sodium) through the vein and see with a camera to camera to take pictures as is the circulation of vessels in the retina.
What instrument is used?
Photographs of the retina Ocular Angiograph the records, prepared to launch a specific flash and record, in the form of photographs or video; contrast over all vascular systems posterior segment of the eye. This instrument handles it deftly optometrist technical.
When we perform it?
When we requested by Ophthalmologist information on diseases affecting the circulation of the retina. Diseases that are used more diabetic retinopathy, venous thrombosis and related macular degeneration wet (ARMD).
How Retinal Angiography Performed?
Requires first put mydriatic eye drops to dilate the pupil. You will need to come together to perform the test because you can see blurry for about 2-6 hours. THEN to take pictures in black and white of the retina and other color photos. Fluorescein is injected into an arm vein, and sequential shots shooting for several minutes.
It is important to tell your doctor any known drug or other contrasts as iodine allergy.
During contrast injection it is normal to experience a slight feeling of nausea or vomiting. Generally these symptoms are mild and disappear when the test.
What are the risks?
In rare cases, it may happen that a person is allergic or hypersensitive to contrast. In these cases you may experience dizziness, urticaria and skin spots after the test. The most severe allergic reactions (called anaphylaxis) are very rare.
What diseases can observe in this exam?
The test helps determine if there Circulation S. Fair in the blood vessels of the retina. Also it can be a corporal to diagnose or track the treatment of eye problems such as diabetic retinopathy, macular degeneration, ocular tumors, venous obstructions.
Should I Take Some action after the test?
Yes, the person ensure to make arrangements for transport before test, as blurred vision may occur up to 6 hours after the test. It is advisable to be accompanied with one as dizziness or nausea may occur.
- Occasionally skin can take the yellowing of the transitional by fluorescein.
- Urine is orange or darker for 1 to 2 days after the test.