MANAGEMENT OF SYMPTOMATIC LATENT NYSTAGMUS

Most patients with latent nystagmus are asymptomatic and do not requir e treatment. We discuss the management by botulinum toxin-injection an d surgery of five cases of latent nystagmus in which the patients suff ered loss of visual acuity on certain manoeuvres as a consequence of a n exacerbation of the nystagmus amplitude. The importance of eve movem ent recordings for accurate diagnosis is stressed and the investigativ e role of botulinum toxin injection is discussed. Extraocular muscle s urgery is helpful in some cases of symptomatic latent nystagmus.