Retinal astrocytic hamartoma.

Background: Retinal astrocytic hamartomas are glial tumors of the retinal nerve fiber layer that arise from retinal astrocytes. Classically they appear as a cream-white, well-circumscribed, elevated lesion that may present as multiple or solitary sites. A lesion is commonly seen with a multilobulated, "mulberry" appearance, but can also appear flat and semitranslucent.

Iritis presumed as secondary to disseminated coccidioidomycosis.

Background: Coccidioidomycosis is a systemic disease caused by a fungus found in soil and transmitted through inhalation. It is prevalent in western and southwestern United States, Mexico, and South and Central America. Results of skin testing, serologic testing, and tissue cultures confirm the diagnosis.

Idiopathic sclerochoroidal calcification.

Background: Idiopathic sclerochoroidal calcification (ISC) is an uncommon condition of calcium deposition at the level of the sclera and choroid of the posterior pole. With normal acuity and visual field, it typically manifests in asymptomatic older males. It can be diagnosed on clinical grounds, appearing as multiple geographic, yellowish, placoid-like lesions in the sclera and choroid, commonly found in the superotemporal arcade of the midperipheral fundus in both eyes.

Paramacular coloboma.

Background: Paramacular coloboma (plural: colobomata) is a solitary oval football or torpedo-shaped chorioretinal lesion located temporal to the fovea in one or both eyes. Previous case reports have speculated varying etiology, but few have justified its pathognomonic shape and location. We believe it to be congenital in nature and caused by incomplete differentiation of the arcuate bundles along the horizontal raphe in development of the macular architecture.