The most common complications are the ocular lesions in 0.5-2.0% of RVF cases. The onset of the eye disease is usually 1 to 3 weeks after the onset of first symptoms. The patient presents with severe localised pain, blurring or loss of vision. When the lesions are in the macula, some degree of permanent visual loss may occur in 1.0 to 10.0% of patients with ocular lesions. Death in patients with ocular disease is uncommon.