Superstein R, Boyaner D, Overbury O, Collin C
Department of Ophthalmology, Sir Mortimer B. Davis Jewish General Hospital, McGill University, Quebec, Canada.
J Cataract Refract Surg. 1997 Mar;23(2):248-53. doi: 10.1016/s0886-3350(97)80349-5.
To determine whether brightness-induced glare decreases spatial contrast sensitivity and visual acuity in preoperative cataract patients with functional visual complaints and to compare preoperative with postoperative results.
Sir Mortimer B. Davis Jewish General Hospital, Montreal, Quebec, Canada.
Twenty patients with a visual acuity of 20/70 or better at the time of chart selection and no other ocular pathology who were referred for cataract surgery were evaluated with the Optec 3000 vision tester to assess contrast sensitivity and visual acuity in the presence and absence of glare. Testing was done preoperatively and 1 and 3 months postoperatively.
An analysis of variance indicated that there were statistically significant double interactions between the preoperative/postoperative and glare/no-glare variables and between the preoperative/postoperative and spatial frequency variables. Postoperatively, visual acuity and contrast sensitivity improved to within normal limits. There were no statistically significant differences in visual acuity and spatial contrast sensitivity between 1 and 3 months postoperatively.
Spatial contrast sensitivity and glare testing provided objective assessment of patients who had good visual acuity yet also had functional complaints.
确定亮度诱导眩光是否会降低术前有功能性视力问题的白内障患者的空间对比敏感度和视敏度，并比较术前和术后结果。
加拿大魁北克省蒙特利尔市莫蒂默·B·戴维斯爵士犹太综合医院。
选取20例在选择研究对象时视力为20/70或更好且无其他眼部病变、因白内障手术前来就诊的患者，使用Optec 3000视觉测试仪评估有无眩光情况下的对比敏感度和视敏度。术前以及术后1个月和3个月进行测试。
方差分析表明，术前/术后与眩光/无眩光变量之间以及术前/术后与空间频率变量之间存在统计学上显著的双重交互作用。术后，视敏度和对比敏感度提高到正常范围内。术后1个月和3个月之间，视敏度和空间对比敏感度无统计学上的显著差异。
空间对比敏感度和眩光测试为视力良好但仍有功能性视力问题的患者提供了客观评估。
