Broad phenotypic variability was observed in nystagmus, ptosis, strabismus, glaucoma, corneal pannus, corneal curvature, corneal vascularization, cataract subtype, ectopia lentis, axial length, and optic disc anomalies, showing phenotyically heterogeneous manifestations of the PAX6 c.307C>T mutation. The gene discussed is PAX6; the disease is pathologic nystagmus.