Fluorescein Angiography
FA
Description
"Fluorescein Angiography" (FA) procedure provides detailed images of the retina’s blood vessels using a special dye and camera system. After injecting fluorescein dye into a vein, doctors photograph how it flows through the eye’s blood vessels. It’s commonly used to detect problems like macular degeneration, diabetic retinopathy, or blocked veins. This procedure helps reveal leakage, blockages, or abnormal growths. Based on the results, doctors can recommend laser therapy, medication, or continued monitoring to preserve eye health.
Test Category
Eye Function
Procedure
Invasive
Sample Type
No biological sample is needed for this test.
Units
Not Applicable
Procedure Category
Inject, Scan
Test Group
Ophthalmological System Group
Test Group Description
Ophthalmological System Group: Tests within this group focus on evaluating the health and function of the eyes and visual system. These assessments provide insights into visual acuity, eye anatomy, and ocular health.
Optimal Range
For All Individuals:
Result: Negative: No abnormalities detected.
Normal Range
For All Individuals:
Result: Negative: No abnormalities detected.
Results That Differ From The Norm (Direct and Indirect Causes)
Abnormal results may indicate:
Diabetic retinopathy (Damage to the retina due to diabetes)
Edema (Swelling)
Hypertension (High blood pressure affecting blood vessels)
Inflammation (Inflammatory conditions)
Macular degeneration (Degenerative changes in the central part of the eye)
Papilledema (Swelling of the optic nerve head)
Trauma (Injuries affecting blood vessels)
Tumor (Abnormal growths affecting blood flow)
Vascular disease (Diseases affecting blood vessels)
Key Reasons For Testing
Vascular Imaging Technique: Fluorescein angiography (FA) visualizes retinal and choroidal blood flow using injected fluorescent dye and imaging.
Retinal Blood Flow Assessment: Evaluates vessel integrity, perfusion, and abnormalities like occlusions or leaks.
Diagnosis of Retinal Diseases: Aids in managing conditions like diabetic retinopathy, AMD, and retinal vein or artery occlusions.
Guidance for Treatment: Identifies vascular issues for interventions like laser therapy or anti-VEGF injections.
Disease Monitoring: Tracks progression and treatment response over time.
Health Status Conditions It May Be Used To Assess
Currently, this test is not directly associated with any conditions listed on the Health Status page. However, it may be included as part of a broader set of tests linked to specific health conditions.
Some Prominent Medical Labs That May Offer This Test
Please note that this particular test has not been associated with any of the listed prominent medical labs. We recommend enquiring with your private physician or nearest hospital to determine where this specific test can be performed.
References
Important Note
Any medical procedure yielding results outside the norm may be directly or indirectly linked to the conditions outlined on this page. Various factors, including genetics, medication and supplement usage, recent illnesses, pregnancy, pre-test eating, smoking, and stress, can impact the test's outcome. Additionally, factors like false positives, false negatives, inaccurate analyses, and others can influence results.
Reference ranges, which help healthcare professionals interpret medical tests, may vary depending on age, gender, and other factors. They may also differ between laboratories due to variations in instruments and methods used. Optimal ranges are designed for preventive purposes, aiming to identify trends and potential risks early, while normal ranges reflect conventional laboratory values indicating no current disease or pathology. Your healthcare practitioner may have specific reasons for testing that deviate from the usual or may interpret results differently based on individual circumstances. Proper interpretation typically involves considering clinical findings and other diagnostic tests. Hence, it is crucial to provide your healthcare professionals with a comprehensive medical history, consult with them for result interpretation, and follow their guidance for potential re-testing or additional diagnostics.
Disclaimer
This content is provided solely for informative and educational purposes. It is not intended as a substitute for medical advice or treatment from a personal physician. Regarding the interpretation of their medical test results and/or specific health questions, it is recommended that all readers and viewers consult their physicians or other qualified health professionals. The publisher is not responsible for any adverse health effects that may result from reading or following the information in this educational content. Before beginning any nutrition, supplement, or lifestyle program, all viewers, especially those taking prescription or over-the-counter medications, should consult their physician or health care practitioner.
Please note that while prominent lab names are included in this content, we cannot guarantee that these labs offer all the tests mentioned. For confirmation, individuals should contact the labs directly or consult their medical practitioners. The information provided reflects general knowledge at the time of publication and may not include recent updates or emerging research. Readers should verify details with qualified professionals to ensure the most up-to-date and accurate guidance.
[1] Yannuzzi LA. Fluorescein angiography: looking back and looking forward. Retina. 2012;32(Suppl 1):S120-S125.
[2] Friberg TR, Musch DC, Lim JI, Morse LS. Prophylactic treatment of patients at risk for choroidal neovascularization secondary to age-related macular degeneration. Ophthalmology. 2006;113(9):1553-1560.
[3] Spaide RF, Yannuzzi LA, Slakter JS, Sorenson JA, Orlock DA. Indocyanine green videoangiography of chorioretinal diseases. Ophthalmology. 1995;102(5):548-559.
[4] Novotny HR, Alvis DL. A method of photographing fluorescence in circulating blood in the human retina. Circulation. 1961;24:82-86.
[5] Lopez PF, Sippy BD, Lambert HM, Thach AB, Hinton DR. Transplantation of retinal pigment epithelium in age-related macular degeneration: a pilot study. Ophthalmology. 1998;105(11):2081-2095.
[6] Bressler NM, Silva JC, Bressler SB, et al. Clinicopathologic correlation of occult choroidal neovascularization in age-related macular degeneration. Arch Ophthalmol. 1992;110(7):827-832.
[7] Gass JD. Stereoscopic atlas of macular diseases: diagnosis and treatment. 4th ed. St Louis, MO: Mosby; 1997.
[8] Guyer DR, Yannuzzi LA, Chang W, Shields JA, Green WR. The cuticular drusen syndrome. Arch Ophthalmol.1987;105(10):1307-1311.
[9] Lim JI, Dreyer RF. Peripheral retinal capillary nonperfusion in uveitis. Ophthalmology. 1991;98(9):1479-1484.
[10] Freund KB, Laud K, Lima LH, Spaide RF. Acquired vitelliform detachment associated with choroidal neovascularization and age-related macular degeneration. Retina. 2007;27(5):622-629.