Hejcmanová Dagmar, Langrová Hana, Bytton Lisa, Hejcmanová Markéta
Charles University in Prague, Faculty of Medicine in Hradec Králové: Department of Ophthalmology, Czech Republic.
Acta Medica (Hradec Kralove). 2003;46(4):189-94.
To examine best corrected visual acuity (BCVA), contrast sensitivity (CS) and functional visual complaints in early cataract and after the cataract surgery.
53 eyes with early cataract (BCVA 20/30: Snellen charts) were examined before the surgery as well as 12 months after the surgery. BCVA was tested using logMAR chart. CS was examined using VCTS chart in 6 spatial frequencies. Influence of glare was tested using BAT. Patients' subjective visual functions were evaluted using a questionnaire (distance vision, near vision, mesopic vision and glare conditions). 22 subjects were examined as control group.
BCVA was 0.52 (0.22-1.05) preoperatively and 0.83 (0.37-1.26) postoperatively. BCVA in patients in both terms was significantly lower compared to the control group. CS in patients before surgery was significantly lower compared to controls, postoperatively improved significantly and was only nonsignificantly lower compared to controls except for the highest spatial frequency. Glare had only nonsignificant influence. The questionnaire scores were correlated with visual performance in both terms.
The significant improvement of both BCVA and CS suggest that cataract surgery improves quality of life in early cataract. Questionnaire should be considered as adjuncts to BCVA and CS in evaluating early cataract.
研究早期白内障及白内障手术后的最佳矫正视力（BCVA）、对比敏感度（CS）和功能性视觉主诉。
对53只早期白内障眼（BCVA 20/30：斯内伦视力表）在手术前及手术后12个月进行检查。使用对数视力表测试BCVA。使用VCTS图表在6个空间频率下检查CS。使用BAT测试眩光的影响。使用问卷（远视力、近视力、中间视觉和眩光情况）评估患者的主观视觉功能。将22名受试者作为对照组进行检查。
术前BCVA为0.52（0.22 - 1.05），术后为0.83（0.37 - 1.26）。两个时期患者的BCVA均显著低于对照组。术前患者的CS显著低于对照组，术后显著改善，除最高空间频率外，仅略低于对照组。眩光影响不显著。问卷得分在两个时期均与视觉表现相关。
BCVA和CS的显著改善表明白内障手术可提高早期白内障患者的生活质量。在评估早期白内障时，应将问卷视为BCVA和CS的辅助手段。
