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Abstract
Optical coherence tomography can confirm the conversion, allow you to differentiate lesions and help you identify subtle changes that could never be documented previously. OCT can be ordered during a clinical examination if you suspect a patient has CNV and you do not see absolute evidence of CNV (blood or fluid). Suspicion arises when you see drusen or mild macular edema in old patient with metamorphopsia. If the OCT scan reveals CNV, fluid or cysts in the retina, fluorescein angiography should be ordered. If the OCT scan comes back clean, there is no need to proceed with fluorescein angiography.
If a patient with exudative AMD is treated, we perform an OCT and a fluorescein angiography at baseline. Fluorescein angiogram is needed because the standard OCT does not delineate the exact extent of a CNV lesion, nor does it tell us lesion composition, both of which are needed to know for treatment. Therefore, fluorescein angiography is essential to guide our treatment; whether it is PDT, thermal laser or anti-VEGF injection.