Unilateral coexistent optic pit and choroidal coloboma

A 48-year-old diabetic woman was referred to us for retinopathy screening. Visual acuity was 20/20 with a refraction of -8.00 in each eye. Fundoscopy of the left eye revealed an inferotemporal optic pit and inferior typical retinochoroidal coloboma independent of the disc. The right optic disc was normal. There was a small choroidal coloboma just inferior to optic nerve head. Systemic and neurologic examinations were normal. Our case is a rare example of optic pit and independent coexistent choroidal coloboma. This observation supports the theory that optic disc pits may be the result of a faulty closure of the embryonic fissure