Chrousos G A, Matsuo V, Ballen A E, Cogan D G
J Pediatr Ophthalmol Strabismus. 1986 May-Jun;23(3):141-3. doi: 10.3928/0191-3913-19860501-10.
Near-evoked nystagmus was evident in two children with spasmus nutans by clinical observation and electro-oculographic recording. In one child the nystagmus appeared to be evoked by fusional convergence and in the other by convergence-accommodation. These cases represent an atypical form of spasmus nutans in which the nystagmus is modulated by centers controlling visuomotor changes with near viewing.