What imaging technique is typically used to diagnose CNV in AMD?

Fluorescein Angiography is the imaging technique typically used to diagnose choroidal neovascularization (CNV) in age-related macular degeneration (AMD) due to its ability to visualize the circulation of the retina and choroid. This technique involves the intravenous injection of fluorescein dye, which highlights blood vessels in the eye. It helps in identifying areas of abnormal blood vessel growth and leakage associated with CNV, providing crucial information regarding the extent and location of the neovascularization.

While other imaging techniques, such as Optical Coherence Tomography (OCT) and Fundus Autofluorescence, also play important roles in assessing retinal conditions, they are used for different purposes. OCT is primarily used for cross-sectional imaging of the retina, allowing detailed visualization of its layers and the presence of fluid or structural changes but does not provide the same level of vascular detail as fluorescein angiography. Fundus Autofluorescence is helpful in assessing retinal pigment epithelium health and isn’t specifically aimed at visualizing neovascularization. Ultrasound Imaging, while useful in certain scenarios, is not typically employed for diagnosing CNV in the context of AMD due to its limitations in assessing detailed vascular structures within the eye.