Epidemic nephropathy, i.e. nephropatia epidemica is a febrile illness caused by the Puumala virus and involving a transient impairment in kidney function. Additional commonly experienced symptoms include headache, backache and limb pain, as well as drowsiness or restlessness and nausea. Visual disturbances appear in approx. one third of those affected with the disease. Blurring of vision is the most common problem. We describe a patient case in which a previously healthy woman contracted epidemic nephropathy causing ocular symptoms that were strong.