A-Scan :

A-Scan is an ultrasound device that emits very high frequency waves that are reflected by the ocular structures and converted into electrical impulses. Used for differentiating normal and abnormal eye tissue or for measuring length of eyeball.

B-scan :

B-scan is an ultrasound device that emits high frequency sound waves to provide a cross-sectional, two-dimensional view of eye tissue that is not visible in other ways If you are diabetic, your doctor may use the B-scan to examine your retina for retinal detachment. If you have a vitreous haemorrhage, your doctor will be unable to examine the retina visually, so he or she must rely on the B-scan to detect any abnormalities.

Fluorescein angiography :

Test used to examine blood vessels in the retina, choroid and iris of the eye. Fluorescein dye is injected into an arm vein and rapid, sequential photographs are taken of the eye as the dye circulates.

Aargon Laser :

Ophthalmic lasers allow precise treatment of a variety of eye problems without risk of infection.
The argon laser is filled with argon gas that produces blue/green wavelengths. These particular wavelengths are absorbed by the cells that lie under the retina and by the red haemoglobin in blood, but the blue-green wavelengths can pass through the fluid inside the eye without damage. For this reason, the argon laser is used extensively in the treatment of diabetic retinopathy, a severe disorder of the retina that causes blood vessels to leak. The argon laser can burn and seal these blood vessels. Retinal detachment is another serious eye problem that can be treated by the argon laser. The laser is used to weld the detached retina to the underlying choroid layer of the eye. Several forms of glaucoma, which is a leading cause of blindness, are also treated with argon lasers.

Ocular Coherence Tomography :

Optical Coherence Tomography (OCT) is a diagnostic test that allows for the imaging and measurement of retinal thickness. OCT is very useful in detecting retinal swelling or fluid accumulation secondary to a variety of retinal conditions. It provides very valuable information and is also useful for following the response to a treatment. OCT testing has become a standard of care for the assessment and treatment of most retinal conditions. OCT uses rays of light to measure retinal thickness and can be performed in a few minutes.