IRCCS-G.B. Bietti Foundation (Savini, Balducci, Schiano-Lomoriello), Rome, Studio Oculistico d'Azeglio (Barboni), Bologna, San Raffaele Hospital (Barboni), Milan, Italy; Stein Eye Institute (Hoffer), University of California, Los Angeles, St. Mary's Eye Center (Hoffer), Santa Monica, California, USA.
J Cataract Refract Surg. 2020 Jan;46(1):27-33. doi: 10.1016/j.jcrs.2019.08.044.
To analyze the results of intraocular lens (IOL) power calculation using measurements by a swept-source optical coherence tomography (SS-OCT) optical biometer.
IRCCS G.B. Bietti Foundation, Rome, Italy.
Evaluation of a diagnostic test instrument.
Preoperative measurements by the OA-2000 (Tomey Inc.) were taken in a consecutive series of patients undergoing cataract surgery with one IOL model (AcrySof SN60WF; Alcon Laboratories, Inc.). Measurements were entered into the following formulas: Barrett Universal II, Emmetropia Verifying Optical (EVO), Haigis, Hoffer Q, Holladay 1, Holladay 2, Holladay 2 with axial length adjustment, Kane, Olsen, Panacea, SRK/T, T2, and VRF. When refraction was measured at 1 month postoperatively, the mean arithmetic prediction error, the median absolute error (MedAE), and the percentage of eyes with a error of ±0.50 D or less were calculated after constant optimization.
We enrolled 150 eyes. All formulas yielded excellent outcomes. The MedAE ranged between 0.200 D and 0.259 D, with a statistically significant difference among formulas (P = .0004). The lowest MedAE values were obtained with the Barrett, EVO, Kane, Olsenstandalone, Radial Basis Function (RBF), and T2 formulas. The percentage of eyes with a prediction error of ±0.50 D or less ranged between 80.00% and 90.67%, with a statistically significant difference (P < .0001). The Barrett, EVO, Holladay 2 with axial length adjustment, Kane, RBF, and T2 achieved the highest percentages (≥88%).
Measurements provided by the SS-OCT optical biometer enable accurate IOL power calculation because all formulas yielded a prediction error within 0.50 D in at least 80% of eyes.
分析使用扫频源光相干断层扫描（SS-OCT）光学生物测量仪测量的人工晶状体（IOL）屈光力计算结果。
意大利罗马 G.B. Bietti 基金会，IRCCS。
诊断测试仪器的评估。
对一系列接受白内障手术且植入一种 IOL 模型（Alcon Laboratories，Inc. 的 AcrySof SN60WF）的患者进行 OA-2000（Tomey Inc.）的术前测量。将测量值输入以下公式：Barrett Universal II、Emmetropia Verifying Optical（EVO）、Haigis、Hoffer Q、Holladay 1、Holladay 2、Holladay 2 伴眼轴调整、Kane、Olsen、Panacea、SRK/T、T2 和 VRF。当术后 1 个月测量屈光度时，在常数优化后计算平均算术预测误差、中位数绝对误差（MedAE）和预测误差为±0.50 D 或更小的眼比例。
我们纳入了 150 只眼。所有公式都取得了良好的效果。MedAE 范围为 0.200 D 至 0.259 D，公式之间存在统计学差异（P =.0004）。Barrett、EVO、Kane、Olsen 独立、径向基函数（RBF）和 T2 公式的 MedAE 值最低。预测误差为±0.50 D 或更小的眼比例为 80.00%至 90.67%，具有统计学差异（P <.0001）。Barrett、EVO、Holladay 2 伴眼轴调整、Kane、RBF 和 T2 达到了最高的比例（≥88%）。
SS-OCT 光学生物测量仪提供的测量值能够实现 IOL 屈光力的精确计算，因为所有公式在至少 80%的眼中得出的预测误差都在 0.50 D 以内。
