Beyoğlu Eye Research and Training Hospital, Bereketzade Mah, No: 2, Beyoglu, Istanbul, Turkey.
Aritmi Osmangazi Hospital, Ulu Mah, Ulubatlı Hasan Bulvarı, No: 48-62, Bursa, Turkey.
Int Ophthalmol. 2020 Aug;40(8):2017-2022. doi: 10.1007/s10792-020-01377-6. Epub 2020 May 10.
To evaluate the effect of Eyecryl posterior chamber phakic intraocular lens (pIOL) on axial length measurement and intraocular lens power calculation.
Axial length (AL), keratometry (K), and IOL power calculations were compared at monthly preoperative and postoperative visits (preoperative vs 1-month). Preoperative IOL power (calculated using preoperative K and AL) was compared with a re-calculation where the pIOL was assumed to be in the posterior chamber (calculated using preoperative K value and postoperative AL).
Thirty-nine eyes of 39 patients were included. The mean preoperative AL and postoperative AL were 27.02 ± 1.50 and 27.17 ± 1.52 mm (p < 0.001), respectively. The mean preoperative and recalculated IOL powers to achieve emmetropia were 9.40 ± 3.35 and 8.98 ± 3.37 D (p < 0.001) with SRK-T formula, 8.82 ± 3.54 and 8.47 ± 3.60 (p = 0.02) with Holladay I formula, and 9.78 ± 3.43 and 9.44 ± 3.50 (p = 0.013) with Hoffer Q formula.
The presence of Eyecryl pIOL in the posterior chamber results in a small increase in the AL measurement, and this might result in a corresponding hypermetropic shift in the desired refraction.
评估 Eyecryl 后房有晶状体眼人工晶状体（pIOL）对眼轴长度测量和人工晶状体屈光力计算的影响。
比较每月术前和术后访视时的眼轴长度（AL）、角膜曲率（K）和人工晶状体屈光力计算值（术前与术后 1 个月）。比较术前人工晶状体屈光力（使用术前 K 值和 AL 计算）与假设 pIOL 在后房时的重新计算值（使用术前 K 值和术后 AL 计算）。
39 例 39 只眼纳入研究。平均术前 AL 和术后 AL 分别为 27.02±1.50 和 27.17±1.52 mm（p<0.001）。SRK-T 公式预测术后理想屈光度的平均术前和重新计算的人工晶状体屈光力分别为 9.40±3.35 和 8.98±3.37 D（p<0.001），Holladay I 公式为 8.82±3.54 和 8.47±3.60（p=0.02），Hoffer Q 公式为 9.78±3.43 和 9.44±3.50（p=0.013）。
Eyecryl pIOL 在后房的存在会导致 AL 测量值略有增加，这可能导致所需屈光度出现相应的远视漂移。
