【摘要】 目的探讨WY21A干涉条纹视力仪(WY21A)对年龄相关性白内障术后视力的预测能力,并与国外同类产品LAMBDA100干涉条纹视力仪(LAMBDA100)进行比较。方法评价施行超声乳化联合人工晶状体植入手术的75只眼的视力,所有眼术前利用WY21A和LAMBDA100进行视力检查,结果与术后第1个月时的最好矫正视力进行对比。结果WY21A术前预测结果趋向于低估,与术后矫正视力具有中等相关。随着白内障程度的加深,WY21A预测功能下降,其准确率逐渐下降,同样其可测率也略有下降。在术前视力大于3.30时,97.87%的患眼均可以利用WY21A获得预测视力,而视力小于3.30时,57.14%的患眼可以获得预测视力。WY21A和LAMBDA100的检查符合率为94.67%。结论在临床使用过程中利用WY21A可以快速、方便给出可信的结果,能够用于日常的大多数年龄相关性白内障的术前预测,该仪器的临床实用性优于国外同类产品,且在预测准确性、可测性方面差异无显著性,可以进一步推广应用。更多还原

【Abstract】 Objective To discuss the use of the WY21A line grid interference retinometer for predicting visual acuity in patients with age-related cataracts.Methods Seventy-five cataract eyes were enrolled in this study. All eyes were evaluated with the WY21A and LAMBDA100 before surgery. These predicted visual acuity results were then compared to actual best corrected visual acuity one month after surgery.Results The WY21A tended to underestimate results and was moderately correlated with postoperative BCVA. In severe cataract patients, the relationship in accuracy between WY21A and postoperative BCVA decreased. However, when preoperative vision was more than 3.30, results for 97.87% of patient eyes were predictable to some degree, and results could be predicted for 57.14% of preoperative patients with less than 3.30. The identical rate for result of WY21A and LAMBDA100 is 94.67%.Conclusion WY21A can be used for screening in predicting the visual acuity for cataract patients who are scheduled to have surgery. The test is fast and easy to perform.更多还原