Figure 3. Fundus Photographs, Optical Coherence Tomography (OCT), and Electrooculography in Various Causes of Infantile Nystagmus Syndrome.

All 4 patients had jerky nystagmus, initially diagnosed as idiopathic infantile nystagmus. P indicates patient in P26 (A), P17 (B), P20 (C), and P28 (D).