原发性开角型青光眼视乳头盘沿高度与视野的一致性研究

A study on correlation between the structural parameter of optic disc and visual field in primary open angle glaucoma

目的 探讨原发性开角型青光眼 (开青 )相对视乳头盘沿高度 (neuralrimdepth ,NRD)与视野检查结果的一致性。方法 利用计算机图像分析技术测量开青患者颞上方和颞下方的NRD值 ,比较NRD值较大部位与视野缺损较重部位的一致性。结果 早、中期开青患者有视野缺损或视野缺损较重部位所对应区域的NRD值较无视野缺损或视野缺损较轻部位所对应区域的NRD值明显增大 ,且 5 4只眼中有 46只眼的NRD值较大部位与视野缺损较重部位相一致 ,符合率达 85 .2 %。结论早、中期开青患者的视乳头颞上区和颞下区NRD值呈不对称降低 ,且盘沿区域中NRD值较大部位与视野缺损较重部位有较好的一致性。

Objective To study the consistency between the optic disc neural rim depth (NRD) and visual field defect in patients with primary open angle glaucoma (POAG) Methods A system of computerized image analysis was used to measure the relative NRDs of temporal superior and temporal inferior area of the optic disc in patients with primary open angle glaucoma The consistency between the area with relatively larger NRD and the location of severer visual field defect was investigated Results In cases with early and middle stage POAG, the value of NRD corresponding to the severer location of the visual field defect was significantly larger than that corresponding to the location without or with mild such defect Among 54 eyes, there were 46 eyes whose location with larger NRD value was consistent with the position of severer visual field defect, the rate of consistency being 85 2% Conclusion In cases with early and middle stage POAG, the increase of NRD value at temporal superior and temporal inferior area is asymmetrical, and the consistency between the area with larger NRD value and the corresponding position of severer visual field defect is relatively good NRD is helpful to the early diagnosis of POAG