title: Pupillography of relative afferent pupillary defect contralateral to monocular mature cataract.
abstract: METHODS
  Few previous reports have documented a relative afferent pupillary defect (RAPD) in the eye contralateral to a dense unilateral cataract. We report pupillographic findings of a 55-year-old man with a mature cataract in the left eye and an RAPD in the right eye, whose RAPD disappeared after cataract surgery in his left eye. Using binocular infrared video pupillography, we recorded the pupillary responses of the two eyes simultaneously during an automated swinging flashlight test before and after the cataract surgery. The average contraction amplitude in both eyes was significantly larger when the unaffected left eye was stimulated before the cataract surgery, but this difference in contraction amplitude disappeared after surgery on the left eye.
  
  
  CONCLUSIONS
  An RAPD was shown quantitatively with a pupillographic technique in the eye contralateral to a mature cataract, confirming previous studies that indicate a dense cataract may produce a small but definite RAPD in the contralateral eye. Such an RAPD associated with a dense cataract must be taken into consideration when evaluating patients with unilateral visual loss.
authors.affiliation: Department of Opthalmology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan. amiki@tc5.so-net.ne.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Miki
authors.forename: Atsuhiko
authors.initials: A
authors.lastname: Iijima
authors.forename: Mineo
authors.initials: M
authors.lastname: Takagi
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Usui
authors.forename: Shigeru
authors.initials: S
authors.lastname: Hasegawa
authors.forename: Haruki
authors.initials: H
authors.lastname: Abe
authors.forename: Takehiko
authors.initials: T
authors.lastname: Bando
mesh_terms: D002386:Cataract / Q000150:complications* / Q000628:therapy; D007839:Functional Laterality; D006801:Humans; D019654:Lens Implantation, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011680:Pupil / Q000502:physiology*; D011681:Pupil Disorders / Q000209:etiology* / Q000503:physiopathology