title: [Retinal symmetry of multifocal visual evoked potential in both eyes of normal subjects].
abstract: OBJECTIVE
  To analyze the retinal symmetry of multifocal visual evoked potential (mfVEP) in both eyes of normal subjects.
  
  
  METHODS
  The monocular mfVEP in both eyes of 36 normal subjects (72 eyes) were tested with VERIS Science 4.0. The stimulus was the pattern reversal dart array consisted of 60 sectors, each included 16 black-white reverse patterns. The visual stimulation was controlled by a binary pseudo-random m-sequence and subtended 25 degrees of retinal region.
  
  
  RESULTS
  The mfVEP patterns between left and right eyes of each subject were similar, and P1 latency and amplitude in correspondent visual field quadrants between left and right eyes had no significant difference(P>0.05). The latency of superotemporal visual field quadrant in right eyes was shorter than that of superonasal visual field quadrant in left eyes, and the amplitude of superonasal visual field quadrant in right eyes was longer than that of superotemporal visual field quadrant in left eyes(P<0.05). The P1 latency and amplitude among four visual field quadrants of each eye had significant difference(P<0.05). The P1 latency between the superonasal visual field quadrant and inferotemporal visual field quadrant or between the superonasal visual field quadrant and inferonasal quadrant visual field had significant differences in right or left eyes(P<0.05).
  
  
  CONCLUSIONS
  The mfVEP of normal subjects exists retinal symmetry.
authors.affiliation: State Key Laboratory of Ophthalmology,Zhongshan Ophthalmic Center,Sun Yat-sen University,Guangzhou 510060, China.
authors.forename: Shizhou
authors.initials: S
authors.lastname: Huang
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Hu
authors.forename: Shixian
authors.initials: S
authors.lastname: Long
authors.forename: Futian
authors.initials: F
authors.lastname: Jiang
authors.forename: Guangwei
authors.initials: G
authors.lastname: Luo
authors.forename: Jiongji
authors.initials: J
authors.lastname: Liang
authors.forename: Dezheng
authors.initials: D
authors.lastname: Wu
authors.forename: Lezheng
authors.initials: L
authors.lastname: Wu
mesh_terms: D005074:Evoked Potentials, Visual; D006801:Humans; D009460:Neurologic Examination; D012160:Retina; D014794:Visual Fields