Indocyanine Green Angiography (ICG)
ICG stands for Indocyanine Green dye. A very small dose, 25 mgs is diluted in water. The main advantage of this dye is that it shows up the choroidal circulation very well (unlike fluorescein dye).
The dye binds to the protein in the blood and is carried to the liver where it is quickly taken from the blood and released into the digestive tract with bile so it does stain the motion for a day or two.
ICG contains Iodide so you should inform the Hospital staff if you have a dye or iodine allergy.
Reactions to fluoroscein dye is not a contraindication to having the ICG dye.
It is not known for certain whether ICG is safe for the developing fœtus of a pregnant woman.
It is safe in children and elderly persons.
Indeed it is a safer dye than normal fluorescein dye.
In extremely rare cases an allergic type reaction can occur which rarely can cause collapse so we do take the precaution of ensuring that emergency equipment is to hand.
ICG does not impair driving a vehicle or operating machinery. Thyroid function tests can be impaired by the Iodide content of ICG if performed soon after the injection (days).
ALCOHOL
Please avoid this the day before and the day after injection.
DRUGS
Please inform the medical staff if you are taking any tablets for diabetes.
This information site has been provided by varied UK and US eye doctors for patients with eye problems.
Once your eye doctor has made a diagnosis or recommended an investigation or treatment, then you will be able to find further explanation on this site.
It is not a self diagnosis centre. It should not be relied upon without taking professional advice.