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This is an example of acquired pendular nystagmus in a subject with sarcoidosis. Horizontal (A), vertical (B) and torsional (C) eye positions are plotted against time. Red traces are right eye positions, while grey traces are left. Horizontal oscillations have minimal amplitude, while the amplitude increased in vertical and then in torsional direction. Torsional oscillations are conjugate, while vertical oscillations are disconjugate as depicted by 180° phase shift.
