RT Journal Article
SR Electronic
T1 Pupillary "dilatation lag" in Horner's syndrome.
JF British Journal of Ophthalmology
JO Br J Ophthalmol
FD BMJ Publishing Group Ltd.
SP 731
OP 735
DO 10.1136/bjo.59.12.731
VO 59
IS 12
A1 Pilley, S F
A1 Thompson, H S
YR 1975
UL http://bjo.bmj.com/content/59/12/731.abstract
AB 1. Clinical examination will often fail to identify the presence of a unilateral Horner's syndrome. 2. Confirmation and localization of Horner's syndrome is of clinical prognostic value. 3. Cocaine testing provides confirmation of a Horner's syndrome, but it takes 45 min, is sometimes equivocal, and always delays the localizing hydroxyamphetamine test. 4. "Dilatation lag" is a sensitive and physiological sign of Horner's syndrome, and can be demonstrated by simple Polaroid flash photographs.