Diagnostic tools are one of the most important resources available to optometrists and ophthalmologists! They help detect eye diseases and direct the appropriate treatment. Thanks to advances in medical science and devices, eye testing tools are more comprehensive than ever before, giving doctors the information they need to make the right treatment decisions. The eye doctors at OCLI Vision use the most effective tools and processes, including fluorescein angiography, to diagnose and treat eye conditions. Today, we’ll cover what a fluorescein angiography is, why it’s vital to eye health, and what to expect if you need one.
What Is Fluorescein Angiography?
A fluorescein angiography is a digital retinal imaging tool that takes a picture of the structures of the eye. The process involves using a special fluorescein stain and camera to take an picture of the blood vessels and structures in the back of the eye, including the retina. Once the eye has been dilated, the patient is injected with the yellow dye. The dye illuminates the blood vessels, allowing a special camera to capture a clear image of the veins with the dye.
Often, FA is used to detect the following conditions, macular degeneration, diabetic retinopathy, retinal vein occlusion, ocular melanoma, macular pucker, and macular edema. The procedure can also be used to track changes in the eye, understand the stage of progressive conditions, or highlight exact treatment areas before a procedure.
When and Why a Fluorescein Angiography is Needed
An FA will be used when an ophthalmologist suspects a condition of the retina, problems with circulation in the eye, or damage to other structures in the back of the eye. The most common symptoms that will necessitate an FA include, blurry vision, vision loss in the center of your vision, distorted or wavy vision, pain or pressure in the eye, swelling, floaters, or a sudden onset of symptoms.
Generally, if you have a family history of macular degeneration, retinal vein occlusion, macular pucker, or other conditions impacting the retina, your doctor may be more likely to perform an FA to ensure they catch problem early. Additionally, your doctor may use an FA if you have symptoms of an eye condition plus any of the following risk factors:
- Diabetes
- Hypertension
- Age-related vision changes
Overall, it’s important to see an eye doctor for regular check ups to prevent serious conditions from advancing without treatment. Many of the conditions listed above can cause permanent vision loss if left untreated.
What to Expect During the Fluorescein Angiogram Procedure
The procedure will consist of the following steps:
- The doctor will start by dilating your eyes to get a clearer picture.
- Pictures will be taken of the eye structures before the dye is injected.
- The dye, called fluorescein eye stain, is injected into a vein, and only takes about 10-15 seconds to travel to the blood vessels in the eye.
- Pictures are taken of the eye with the dye circulating.
How Long Does Fluorescein Eye Stain Last?
The dye will be filtered out by your kidneys within 24 hours.
Angiogram Dye Side Effects
There are potential side effects for the procedure, but most are mild, and a health care professional will be monitoring the patient closely. Side effects may include:
- Objects appearing darker or tinted
- Skin may appear yellow because of the dye circulating in the veins
- Blurry vision or light sensitivity due to dilated pupils
- Dark urine as the dye is filtered through the kidneys
Rare side effects that indicate an allergic reaction include hives, itchy skin, and breathing problem when severe. Luckily, if a patient experiences an allergic reaction it can be treated quickly in the clinic with a shot or medicine, making this a safe procedure.
After the Test: What Happens
Once the test is complete, the patient will be monitored closely for any adverse reactions, and sent home if nothing is observed. The image will be reviewed by the eye doctor and the appropriate next steps will be taken. If the doctor suspects something is wrong, they will schedule follow-up appointments or treatment, depending on the severity of the problem.
If nothing is detected, the eye doctor will keep the image in the patient’s chart as reference in case the test must be completed again. If the test is being used to direct treatment to a specific area, the doctor will perform the treatment and give any follow-up instructions.
Most patients are fine to drive themselves home afterwards and continue with any normal activities, just remember to bring sunglasses as dilated eyes are more sensitive to light.
When to See a Specialist at OCLI Vision
Regular eye exams are the key to catching problems before they threaten your vision! The eye care professionals at OCLI Vision are experienced in diagnosing and treating a variety of eye conditions, and they want to ensure you have healthy vision for life. Getting a fluorescein eye exam is as simple as making an appointment online. Schedule a consultation today.
