title: [Analysis of the correlation between parapapillary atrophy zones and visual field loss].
abstract: OBJECTIVE
  To analyze the association between parapapillary atrophy zones and mean sensibility (MS) and  mean defect (MD) from visual field examination.
  
  
  METHODS
  Selection was performed among 201 cases (402 eyes) who  underwent Heidelberg retinal tomography (HRT) and visual field examination (OCTOPUS) during the 2-week duration  at Department of Ophthalmology, Peking University People's Hospital between April 2001 to October 2002. Of all  the cases, 103 (161 eyes) that had suffered from MD>2 dB and whose refractive error and fundus appearance did not  meet exclusion criteria were enrolled.
  
  
  RESULTS
  Maximum diameters of β zone and α zone were not significantly  associated with refractive errors, disc area, optic cup area and rim area (all P>0.05). Maximum diameters of  both β zone (r=-0.188, P=0.017)and α zone(r=0.209, P=0.008) were significantly associated with MS.  Similarly, maximum diameters of both β zone (r=0.159, P=0.044)and α zone(r=-0.191, P=0.015) were  significantly associated with MD.  However, the maximum diameter ofβ zone was the risk factor to defect of  visual field, but the maximum diameter of α zone was the protective factor to defect of visual field.
  
  
  CONCLUSIONS
  Among the patients with remarkable defect of visual field, the maximum diameters of parapapillary atrophy  zones are associated with damage of visual field.
authors.affiliation: Department of Ophthalmology, Peking University People's Hospital, Key Laboratory of Vision Loss and  Restoration, Ministry of Education, Beijing 100044, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Tao
authors.forename: Min
authors.initials: M
authors.lastname: Quan
authors.forename: Xiao-Xin
authors.initials: XX
authors.lastname: Li
authors.forename: Can-Sheng
authors.initials: CS
authors.lastname: Li
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001284:Atrophy; D005260:Female; D005901:Glaucoma / Q000473:pathology* / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000473:pathology*; D058609:Visual Field Tests; D014794:Visual Fields / Q000502:physiology*; D055815:Young Adult