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[Analysis of the correlation between parapapillary atrophy zones and visual field loss]
Yong Tao1, Min Quan, Xiao-Xin Li
1Department of Ophthalmology, Peking University People's Hospital, Key Laboratory of Vision Loss and Restoration, Ministry of Education, Beijing 100044, China.
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.
Conclusion:
Among the patients with remarkable defect of visual field, the maximum diameters of parapapillary atrophy zones are associated with damage of visual field.
