Amesbury Eric C, Grossberg Anna L, Hong Donna M, Miller Kevin M
Department of Ophthalmology, David Geffen School of Medicine at UCLA and the Jules Stein Eye Institute, Los Angeles, California 90095-7002, USA.
J Cataract Refract Surg. 2009 Sep;35(9):1505-8. doi: 10.1016/j.jcrs.2009.04.031.
To measure the visual outcomes after cataract surgery in patients with 20/20 or better preoperative visual acuity.
University-based cataract referral practice.
In this retrospective case review, 2 groups of patients with a corrected distance visual acuity (CDVA) of 20/20 or better in both eyes before cataract surgery were identified. Patients in the first group had a cataract in 1 eye and an intraocular lens (IOL) in the other eye. Patients in the second group had cataracts in both eyes. Each patient completed a Visual Function 14 (VF-14) questionnaire before and after cataract surgery. Changes in VF-14 scores were analyzed.
The VF-14 scores improved significantly after cataract surgery in both groups. Patients with cataract in 1 eye and an IOL in the other eye before surgery (n = 28) had a mean improvement of 12.2 in the VF-14 score (P = .029). Patients with cataract in both eyes (n = 31) had a mean improvement of 14.5 in the VF-14 score (P<.0001).
The functional vision of patients with 20/20 or better preoperative CDVA improved significantly after cataract surgery. This finding shows that arbitrary CDVA thresholds of worse than 20/20 cannot always be used to determine who will benefit from cataract surgery.
测量术前视力为20/20或更好的患者白内障手术后的视觉效果。
基于大学的白内障转诊诊所。
在这项回顾性病例研究中，确定了两组白内障手术前双眼矫正远视力（CDVA）为20/20或更好的患者。第一组患者一只眼睛患有白内障，另一只眼睛植入了人工晶状体（IOL）。第二组患者双眼均患有白内障。每位患者在白内障手术前后均完成了视觉功能14（VF - 14）问卷。分析VF - 14评分的变化。
两组患者白内障手术后VF - 14评分均显著改善。术前一只眼睛患有白内障且另一只眼睛植入IOL的患者（n = 28），VF - 14评分平均提高了12.2（P = .029）。双眼患有白内障的患者（n = 31），VF - 14评分平均提高了14.5（P<.0001）。
术前CDVA为20/20或更好的患者白内障手术后功能性视力显著改善。这一发现表明，不能总是使用低于20/20的任意CDVA阈值来确定谁将从白内障手术中获益。
