Mansoura Ophthalmic Center, Mansoura University, Mansoura, Egypt.
Curr Eye Res. 2012 Aug;37(8):694-7. doi: 10.3109/02713683.2012.671437. Epub 2012 Jun 11.
To compare predicted intraocular lens (IOL) power obtained with adjusted ultrasound biometry versus actual power obtained with automated intraoperative retinoscopy (AIR) in eyes undergoing combined cataract extraction and silicon oil removal in the same session.
Fifty eyes with significant cataract; requiring silicon removal were included. Preoperative ultrasonic biometry with adjusted velocity (980 m/s) was recorded. After silicon removal, AIR was done and IOL power was calculated and inserted. Postoperative refraction was recorded up to 3 months.
AIR was successfully obtained in all eyes. Significant correlation (p = 0.000, R = 0.91) was detected between mean power of predicted (15.8 ± 8.4) and implanted IOL (11.7 ± 8.5). Mean postoperative refraction was +0.53 ± 0.31 at 1 week, +0.40 ± 0.35 at 1 month and +0.12 ± 0.20 at 3 months. The difference was statistically significant in all time intervals. Myopic shift occurred in 37% of eyes at the third month.
AIR in combined cataract extraction and silicon oil removal is easy and provides predictable outcome in all eyes. It represents a bypass to all methods of biometry based on axial length measurement. Future correction formula based on adjusted ultrasound velocity can be a simple alternative and predictable method.
比较在同一手术中同时行白内障摘除和硅油取出术的患者中，使用调整后的超声生物测量法预测的人工晶状体（IOL）度数与使用自动术中视网膜检影（AIR）实际测量的 IOL 度数。
纳入 50 只需要行硅油取出术的白内障眼。记录术前超声生物测量的调整后速度（980 m/s）。硅油取出后，行 AIR 并计算和植入 IOL 度数。术后屈光度随访至 3 个月。
所有眼均成功获得 AIR。预测（15.8 ± 8.4）和植入 IOL 平均（11.7 ± 8.5）的平均功率之间存在显著相关性（p = 0.000，R = 0.91）。术后第 1 周、第 1 个月和第 3 个月的平均术后屈光度分别为+0.53 ± 0.31、+0.40 ± 0.35 和+0.12 ± 0.20，所有时间间隔的差异均有统计学意义。第 3 个月时，37%的眼出现近视漂移。
在白内障摘除和硅油取出联合手术中，AIR 操作简单，所有眼的结果均可预测。它绕过了所有基于眼轴长度测量的生物测量方法。基于调整后的超声速度的未来矫正公式可能是一种简单且可预测的替代方法。
