Infiltrative Optic Disk Edema
Infiltration of the optic disk occurs in about one in three cases of leukosis or other blood dyscrasias. This infiltration results in optic disk edema that is usually associated with infiltration of the meninges. The optic disk edema can therefore occur from both direct leukemic infiltration and secondary to increased pressure in the meninges of the optic nerve. The prognosis for both vision and survival is poor.