研究一种针对白内障患者的潜在视功能检测仪。采用透射式视力分辨率板并且使进入眼瞳成像光束足够细和有足够的光能量,以致能够通过白内障患者云雾状晶状体中的微小间隙在视网膜上成像,移动透射式视力分辨率板调焦可测出患者的视度在-7D~+12D之间的潜在视力。进行了光学系统结构设计和理论计算,进行了实验和测试。实验测试结果表明,该系统出瞳位置光斑直径D-=0.094 mm,测得视力与传统测试方法测得视力相一致。通过该仪器对白内障患者手术前检测,可比较准确预测置换人工晶体手术后达到的视力水平,这对医生和患者都具有重要参考价值。 To study a potential visual function detector for cataract patients. Using a transmissive vision-resolution panel with enough light energy to enter the pupil imaging beam and enough light energy to image the retina through the tiny gaps in the cloud-like lens of a cataract patient, moving the transmissive vision-resolution panel Focusing The patient’s visual acuity was measured between -7D and +12 D potential visual acuity. The optical system structure design and theoretical calculation were carried out, and the experiments and tests were carried out. Experimental results show that the exit pupil spot diameter D = 0.094 mm, the measured visual acuity consistent with the traditional test methods measured visual acuity. The preoperative detection of cataract patients through this instrument can accurately predict the level of vision achieved after the replacement of intraocular lens surgery, which is of great reference value to both doctors and patients.