RT Journal Article SR Electronic T1 Latent Nystagmus and Alternating Hyperphoria JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 217 OP 231 DO 10.1136/bjo.38.4.217 VO 38 IS 4 A1 J. Ringland Anderson YR 1954 UL http://bjo.bmj.com/content/38/4/217.abstract AB