Transillumination of the angular and frontal veins.
A 500-W fiber optics cold light used to transilluminate the angular and frontal veins allowed quick, accurate delineation of the veins for percutaneous orbital venography. It also allowed the surgeon to avoid cutting the angular vein when operating on the lacrimal sac.
D005145:Face / Q000098:blood supply*; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D055100:Optical Fibers; D010690:Phlebography / Q000295:instrumentation / Q000379:methods; D014172:Transillumination / Q000295:instrumentation*; D014680:Veins