Chicagoland Retinal Consultants offers a series of the top testing procedures in the country to give you the most accurate information so our doctors can give the individualized treatment based on your needs.
What is a Fluorescein Angiogram?
A fluorescein angiogram is a valuable test which provides information about the condition of the retina. Fluorescein is the dye that is injected into a vein and the dye then circulates in the bloodstream and makes its way to the blood vessels in the retina.
A special camera is used to take pictures of the dye as it flows through the blood vessels of the retina. Since the camera is hooked-up to a digital system, this allows the doctor to interpret the results immediately. The images can be printed so that a copy can be given to the patient or sent on to the patient’s eye care provider. There are many reasons a fluorescein angiogram would be required. This diagnostic tool is used to check for conditions such as diabetic retinopathy and macular degeneration. These are just two of many diseases requiring the use of this special test.
After the test, your urine may turn orange for up to 24 hours. Some patients experience nausea and vomiting during the test. Allergic reactions are rare. Severe anaphylactic reactions have been reported, but are not common.
Indocyanine Green Angiography
What is an ICG?
Indocyanine Green Angiography (ICG) is a diagnostic test that involves taking photographs of the blood vessels in the eye with the help of a dye similar to a fluorescein angiography. Indocyanine is green dye, that works with infrared light. After the dye is injected, it circulates through the bloodstream and makes its way to the blood vessels underneath the retina. We use a special camera to take pictures of the dye as it flows through these blood vessels.
The images produced by this test helps the doctor evaluate the retina and diagnosis or monitor problems such as macular degeneration, abnormal vessel growth, and macular edema to name just a few. Since the camera is hooked-up to a digital system, this allows the doctor the ability to interpret the results immediately.This test is considered safe for most patients, although it is possible to have a reaction to the dye or symptoms such as itching, nausea, and/or a rash. These symptoms, if severe can be controlled with oral medication. Contraindications for the use of this dye may include liver disease, allergies to iodine, or allergies to shellfish.
What is an Ocular Ultrasound?
B-scan ultrasonography is an imaging technique that uses high-frequency sound waves that can be used instead of light to create an image of the retina and the surrounding structures. It is a non-invasive diagnostic test we use to examine the eyeball when we cannot see into the back of the eye. For example, if the view to the back of the eye is obstructed by a dense cataract, the ultrasound is utilized to get an image of the back of the eye to evaluate for pathology.
This is the same technique used to view an image of a baby for an expectant mother. It is painless and in no way dangerous to the eye. A small amount of water-based gel will be applied to your eyelid and a small probe will be placed over the eye. The probe sends the ultrasound waves to the area of interest. During the test, the physician and/or technician may ask you to move your eye position to get different ultrasound angles. You should continue to keep your eyes closed throughout the test. The technician will remove the gel from your eye or eyes when the test is finished.
Optical Coherence Tomography
What is an OCT?
Optical Coherence Tomography (OCT) is a non-invasive imaging technique that produces high resolution cross-sectional tomographs (or pictures) of the retina. This technique is very effective in helping to diagnose and guide treatments for a broad variety of retinal diseases. The OCT images will allow the doctors to detect eye conditions and diseases in their early stages, in order to provide the best treatment options for the preservation and restoration of vision. It is painless and in no way dangerous to the eye.