microangioscopy

cap·il·lar·i·os·co·py

(kap'i-lar'ē-os'kŏ-pē),
Viewing the cutaneous capillaries at the base of the fingernail through the low power of the microscope.

microangioscopy

(mī″krō-ăn″jē-ŏs′kō-pē) [″ + ″ + skopein, to examine]
The use of microscopy to diagnose pathological changes in capillaries.