This 25yo was referred for this asymptomatic choroidal coloboma.
A B-scan OCT through our patient’s coloboma shows that the sclera is continuous and non-displaced within the coloboma.
A staphyloma, by definition, is an outpouching of the entire eye wall. Choroidal coloboma always involves a choroidal defect, but may or may not also involve the sclera.
Learning Points:
Choroidal colobomas are most commonly due to failure of the optic vesicle and choroidal fissure to close during fetal development. Lesions like this may also be from other causes, including toxoplasmosis. Choroidal coloboma can present as solitary or multiple lesions. Visual prognosis depends on the location and involvement of the optic nerve and macula.
