Gasser P, Flammer J, Mahler F
Internmedizinische Abteilung, St. Claraspital, Basel.
Schweiz Med Wochenschr. 1988 Feb 13;118(6):201-2.
In a number of patients with etiologically unexplained visual field loss, a vasospastic syndrome was found with the aid of capillaroscopic local cooling test on the fingers. After therapy with calcium entry blockers the visual field of the patients with vasospastic syndrome underwent a marked and statistically significant improvement. The control group showed a slight but statistically insignificant tendency towards improvement.