This paper presents study about the different despeckling methods used for quality enhancement of retinal optical coherence
tomography (OCT) images. Speckle noise is an inherent property of an OCT images which affects the visual quality of the images, hence
difficult to diagnosis the patients. Therefore speckle noise reduction from the OCT images is an important prerequisite, whenever OCT
imaging is used for diagnosis. The speckle noise intensity depends on the various imaging system parameters of its systems and the
different structure representations used for the image tissues. A despeckling technique is to be designed in such a way that it should be
able to reduce the speckle noise from the OCT images while preserving the tissues and fine details of the images.