Dr Agarwal's Eye Hospital and Eye Research Centre, Chennai, India.
Eye (Lond). 2011 Sep;25(9):1187-93. doi: 10.1038/eye.2011.150. Epub 2011 Jun 17.
To evaluate the visual acuity and quality-related satisfaction of patients implanted with a refractive design multifocal intraocular lens (IOL), and evaluate the factors predicting it including angle kappa.
Dr Agarwal's Eye Hospital and Eye Research Centre, Chennai.
In this prospective trial, 50 eyes of 44 consecutive patients were included. All patients underwent phacoemulsification with multifocal IOL implantation (Rezoom IOL, Abbott Medical Optics). The preoperative and postoperative assessment included slit lamp biomicroscopy, uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA) and kappa angle assessment. At 1 year, 37 patients (43 eyes), who finished follow-up, were asked to rate their symptoms on a graded questionnaire (0-5 for five queries).
The decimal scores for UCVA and BCVA were 0.38±0.21 and 0.47±0.17 (preoperative), and 0.75±0.22 and 0.99±0.11 (postoperative), respectively. Symptom scores were haloes 0.98±1.7, glare 0.69±1.48, blurred distance 1.0±1.7, intermediate 1.34±1.6, near 1.06±1.8. On regression analysis haloes depended on angle kappa and distance UCVA (R (2)=0.26, P=0.029), and glare on angle kappa (R (2)=0.26, P=0.033). Poor satisfactions with distance, intermediate, and near vision were linked with distance UCVA (R (2)=0.17, P=2.3 × 10(-4)), distance UCVA (R (2)=0.1, P=0.04), and near UCVA (R (2)=0.12, P=0.03), respectively. The strongest predictor, however, for overall visual discomfort was distance UCVA (R (2)=0.1, P=0.04).
Our study suggests that there may be a role of misalignment between the visual and pupillary axis (angle kappa) in the occurrence of photic phenomenon after refractive multifocal IOL implantation.
评估植入折射型多焦点人工晶状体（IOL）的患者的视力和与质量相关的满意度，并评估包括角度kappa 在内的预测因素。
Chennai 的 Agarwal 博士眼科医院和眼科研究中心。
在这项前瞻性试验中，纳入了 44 名连续患者的 50 只眼。所有患者均接受了超声乳化白内障吸除术和多焦点 IOL 植入术（Rezoom IOL，Abbott Medical Optics）。术前和术后评估包括裂隙灯显微镜检查、未矫正视力（UCVA）、最佳矫正视力（BCVA）和角度 kappa 评估。术后 1 年，完成随访的 37 名患者（43 只眼）被要求在分级问卷上对其症状进行评分（0-5 分为五个查询）。
UCVA 和 BCVA 的十进制评分分别为 0.38±0.21 和 0.47±0.17（术前）和 0.75±0.22 和 0.99±0.11（术后）。症状评分分别为光晕 0.98±1.7、眩光 0.69±1.48、远距离视力模糊 1.0±1.7、中间距离 1.34±1.6、近距离 1.06±1.8。在回归分析中，光晕取决于角度 kappa 和距离 UCVA（R (2)=0.26，P=0.029），而眩光取决于角度 kappa（R (2)=0.26，P=0.033）。远距离、中间距离和近距离视力满意度差与距离 UCVA（R (2)=0.17，P=2.3×10(-4)）、距离 UCVA（R (2)=0.1，P=0.04）和近 UCVA（R (2)=0.12，P=0.03）相关。然而，整体视觉不适的最强预测因素是距离 UCVA（R (2)=0.1，P=0.04）。
我们的研究表明，在屈光性多焦点 IOL 植入术后，视觉轴和瞳孔轴之间的失准（角度 kappa）可能会导致光幻现象的发生。
