Indiana University ophthalmology expert Dr. Darrell WuDunn offers the following summary:

“Multifocal choroiditis is a rare eye disorder that predominantly affects women in their third to fifth decade. Some people with multifocal choroiditis have only mildly blurred vision, while others have vision too poor to drive or read normal-size print. In about half of cases, the vision continues to decline despite treatment. The cause of multifocal choroiditis is unknown, although some studies suggest an autoimmune response to an infection. Suppression of the immune system with corticosteroids and other therapies may be beneficial early in the disease course. Anti-infectious agents are not helpful. In some instances, laser treatment or injection into the eye may be indicated. Unfortunately, recurrences are common, and the visual prognosis is usually poor. Close monitoring by the ophthalmologist is recommended.”