Bilateral visual acuity reduction in a child with Marfan syndrome: Is there a pathogenetic role for optic nerve dural ectasia?

Marfan's syndrome (MFS) is a genetic disorder of the connective tissue diagnosed according to international defined criteria, including spinal dural ectasia. MFS is clinically heterogeneous, with infrequently reported neurological complications. To date, little is known about the occurrence of visual acuity reduction in MFS. We report a case of bilateral visual acuity reduction in a child with MFS, in which magnetic resonance imaging of the brain showed bilateral optic nerve dural ectasia. Could optic nerve dural ectasia may have any role in MFS visual acuity reduction pathogenesis?