白内障眼におけるIOL Master® 700の測定精度・信頼度および術後屈折誤差

Postoperative refractive error and the accuracy of IOL Master® 700 in cataract eyes

要約　目的：IOL Master^® 700において，注意喚起を与える指標（「！」）が表示される症例の測定精度，術後屈折誤差を検討した。

対象と方法：術前検査で指標が表示された33名37眼（71.9±15.0歳）の術前後の眼軸長差，術後屈折誤差を検討した。

結果：病型は前囊下・後囊下白内障（以下，SC）が最も多く（62.2％），眼軸長表示数が少ない症例では眼軸長差が有意に大きかった（p＜0.01）が，術後屈折誤差は有意差がなかった（p＞0.05）。

結論：注意喚起を与える指標の症例はSCが多く，術前後の眼軸長差はやや大きいが，術後屈折誤差に及ぼす影響は小さかった。

Abstract　Purpose：To evaluate postoperative refractive error and the accuracy of IOL Master^® 700 in cataract eyes.

Methods：The axial length（AL）that indication of attention was shown on 33 eyes of 37 patients was pre and postoperatively measured using IOL Master^® 700. We evaluated cataract type and severity, the AL differences before and after surgery, and postoperative refractive error. Postoperative refractive error was evaluated in patients with best-corrected visual acuity of 0.7 or better, which could be observed 3 months postoperatively.

Results：The indication to give attention of IOL Master^® 700 was shown in a high percentage of anterior or posterior subcapsular cataract（62.2％）. For AL differences with a small number of acquisitions were significantly large（p＜0.05）, but postoperative refractive error was not correlated, regardless of the number of AL acquisitions（p＞0.05）.

Conclusion：In cataract eyes, the indication to give attention of IOL Master^® 700 on AL was shown in a high percentage of anterior or posterior subcapsular cataracts. Although there were large AL differences before and after surgery, their influence on postoperative refractive error was small.