LVC程序视野检查在青光眼合并白内障患者的应用

Application of LVC Perimetric Strategy in Glaucoma Patients with Cataract

目的 探讨中央低视力(low vision center, LVC)程序视野检查在术前评估青光眼合并白内障低视力患者视功能的价值。方法 接受青光眼-白内障联合术的低视力患者共14例(14只眼),术前1 d及术后3月内行LVC程序视野检查。术前同时行视网膜潜视力测定。结果 所有患者在联合术后总的平均阈值敏感度(mean sen-sitivity,MS)均有显著提高(P<0.01),而颞侧的MS值较鼻侧改善更为明显。术前视野已有绝对暗点形成的区域,术后仍存在。与视网膜潜视力测定相比,LVC程序视野检查的MS值与术后最佳矫正视力间存在对应关系。结论 术前LVC程序视野检查对于青光眼合并白内障低视力患者有特殊价值,有助于术者判断该类患者术后的视力、视野的情况,可作为术前估计其潜在视功能的新方法之一。

Objective To investigate the pre-operative low vision center (LVC) program peri-metry for evaluating the latent visual function of glaucoma patients with cataract. Methods A total of 14 eyes of 14 low vision patients underwent LVC program perimetry before cataract and glaucoma surgery and at 3 months after surgery; the potential visual acuity was also performed before surgery. Results Significant changes were found in the total mean sensitivity ( MS) before and after surgery, and more significant changes were found in the temple region than in the nasal region. The dense scotoma present before surgery,did not change markedly after surgery. MS of LVC program perimetry showed better relationship to post-operative visual acuity compared with potential visual acuity. Conclusion LVC program perimetry has special value as a pre-operative examination for low vision glaucoma patients with cataract to predict their visual acuity and visual field. It is a new method to evaluate the latent visual function before surgery.