Imaging Modalities

Fluorescein Angiography (FA)
A special dye (Sodium Fluorescein) is injected into your vein and serial photographs of the retina are taken. The photographs may reveal leaking new vessels (choroidal neovascular membrane), define its location in reference to the centre point and determine any associated finding i.e. hemorrhage, exudates. Fluorescein angiography is an important tool in planning treatment and a recent angiogram is essential at the time of treatment. Repeat angiograms after treatment are indicated to confirm the status of the lesion.

Indocyanine Green Angiography (ICGA)
ICGA gives a better study of the deeper (choroidal) circulation. It is indicated in certain cases where the fluorescein angiography is inconclusive e.g. cases with ill-defined membranes, presence of hemorrhage, or polypoidal vasculopathy. It takes longer than fluorescein angiography as photographs are taken till 20 minutes after injection of dye.

Optical Coherence Tomography (OCT)
This is a newer noninvasive test, which gives an accurate structural analysis of the retina. It is a non contact scan which provides very high-resolution imaging without the need for any injection of any dye etc. At Shroff eye center we have acquired the latest SPECTRAL DOMAIN OCT machines which have a resolution of 5 microns! It is helpful in diagnosis and very importantly in follow-up of the disease.

OPTOS
This is a new ultra widefield retinal imaging system, which is the result of cutting edge,pioneering technology. Conventional imaging allows 45 to 50 degrees of the retina to be imaged.

With the Optos more than 80% or 200 degrees can be imaged in a single capture. This is truly helpful to detect, document and monitor diseases which may first present in the periphery.
We are one of the first institutions in the country to acquire this new facility.