Causticum is a curative remedy in this shortening of the tendons and muscles. Causticum is rich in eye symptoms. Very often the patient says that the eyelids feel so heavy that he can hardly hold them up. This gradually increases until it becomes an actual paralysis. Flickering before the eyes.
Air seems full of little black insects.
Then, again, large black or green spots are seen. After looking at the light a green spot appears and remains in the field of vision for a long time. And the vision gradually grows weaker until it is lost. Paralysis of the optic nerve. The cornea is covered with little veins.