Abstract:

Polypoidal choroidal vasculopathy (PCV) is recently known as a fundus disease,which is characterised as a peculiar form of choroidal vascular abnormality associated with hemorrhagic or serous detachment of pigmented epithelium in the macula. Indocyanine green angiography(ICGA)is seen as the gold standard of diagnosing PCV. With the development of optical coherence tomography (OCT), from the time-domain-OCT characteristics of double-layer sign to a change in spectral-domain-OCT  clearly presenting abnormal vascular network (BVN) and polyps, and then to OCT angiography which can presents the expansion of the choroidal vascular and polypoidal structure’s reflected signal changes, this non-invasive diagnosis method provides a more and moer reliable way in diagnosing PCV.