FFA (FUNDUS Fluorescein angiography)
Fluorescein angiography, a clinical test to look at blood circulation inside the eye, aids in the diagnosis of retinal conditions associated with diabetes, age-related macular degeneration, and other eye abnormalities.
Fluorescein, an orange-red dye, is injected into a vein in the arm. The dye travels through the body to the blood vessels in the retina. A special camera with a filter flashes a blue light into the eye and takes multiple photographs of the retina and also helps to monitor the course of a disease and its treatment. It may be repeated on multiple occasions. No X-rays are involved.
If there are abnormal blood vessels, the dye leaks into the retina or stains the blood vessels. Damage to the lining of the retina or atypical new blood vessels may be revealed as well. These abnormalities are determined through a careful interpretation of the photographs by an ophthalmologist.

Indocyanine Green Angiography (ICG)
An Indocyanine Green study (ICG) is a special dye test used to evaluate the circulatory system of the choroid, the layer just behind the retina. ICG reacts to light with a longer wavelength than fluorescein dye, allowing the doctor to pinpoint the location of leaking vessels deeper within the eye that may not be apparent with fluorescein angiography.

OPTICAL COHERENCE TOMOGRAPHY III
The OCT with maximum resolution gives an excellent cut section optical view for in depth analysis of the retina. We began the use of this diagnostic modality for macular diseases for the first time in India.
OCT is a non-invasive, non-contact, transpupillary imaging technology, which can image retinal structures in vivo, with a resolution of 10 to 17 microns. Cross sectional images of the retina are produced using the optical backscattering of light in a fashion analogous to B scan ultrasonography.The anatomic layers within the retina can be differentiated and retinal thickness can be measured.Besides, the optic disc and nerve fibre layer can be assessed in cases of glaucoma.

HEIDELBERGRETINAL ANGIOGRAPHY
State of the art systems to perform Fluorescein and indocyanine green angiography in patients with retinal disorders. HRA-movie of the early phase of the angiogram can be taken. Very useful for the central pathology with facility of highlighting 10°, 20°, 30° of central macula..

ELECTRORETINOGRAM (ERG)
ERG is the diagnostic procedure to evaluate and confirm defuse retinal degenerations with the help of mass electric response generated by the retina when subjected to flashes of light.

MULTIFOCAL ELECTRORETINOGRAM (mfERG)
THE MULTIFOCAL ERG, which has been introduced for the first time in Mumbai, is used to study local responses from the retina and to determine with focal retinal degenerations and lesions.
ELECTRO-OCULOGRAM (EOG).
Is the only mean of understanding the measure of retinal function that depends upon the integrity of retinal pigment epithelium layer of retina.

ELECTRO-OCULOGRAM (EOG)
It is the only means of understanding the measure of retinal function that depends upon the integrity of retinal pigment epithelium layer of retina.

MULTIFOCAL VISUAL EVOKED POTENTIAL (VEP)
Is useful to objectively determine visual acuity and aid objective diagnosis by topographically mapping brain activity and determining the presence of visual field and visual acuity deficits.

PREFERENTIAL HYPERACUITY PERIMETER
The most sensitive method in the world to detect the beginning of wet age related macular degeneration in the most severe form of ARMD and designed to detect and monitor the progression of the disease in a non-invasive manner. The PHP examination is easy to administer in just 3-5 minutes and provides a comprehensive examination covering 14° of the macular area.

For more details you can Email at retina_uvea@adityajyot.org