[Ocular vasospasm. 2: Diagnosis of vasospastic syndrome using nailfold capillary videomicroscopy].

Nailfold capillary videomicroscopy provides a very useful method to verify vasospastic disorders in ophthalmic patients. Capillary videomicroscopy at the nailfold in connection with a local cold exposure test are presented as a method with clinical applicability in vasospastic disease. This method allows not only differential diagnosis of Raynaud's phenomenon and evaluation of follow up but also to achieve pharmacological tests with different drugs which possess a specific action at the microvascular bed.