Seven patients with nystagmus underwent large retroplacements of the f
our horizontal rectus muscles. Nystagmus was horizontal in all seven p
atients, but three had a vertical component. The horizontal nystagmus
improved in all seven patients. All improved at least one line for dis
tance and from three to five lines for near. Retroplacement of the fou
r horizontal rectus muscles is a safe and effective procedure for the
reduction of nystagmus and the improvement of vision, particularly for
near vision, producing little or no induced strabismus or limitation
of motility.