Comparison of Refractive Prediction Error by Axial Length in Flanged Intrascleral Intraocular Lens Fixation

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-01 DOI:10.2147/opth.s455178

Yoshiaki Kabata, Tetsutaro Oki, Tadashi Nakano

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Abstract

Purpose: To evaluate the refractive prediction error in flanged intrascleral intraocular lens (IOL) fixation using the SRK/T formula and compare the axial length using a single IOL. Methods: Seventy-six eyes from 70 patients (45 males and 25 females) were included in this study. The mean age at the time of surgery was 73.4 ±12.3 years. The patients underwent flanged IOL fixation using a PN6A (Kowa). All surgeries were performed by two surgeons (Y. K. and T. O.) between Jan 2020 and Dec 2022 at Jikei University Daisan Hospital. IOL power was calculated using the SRK/T formula with IOL Master 700 (Carl Zeiss) as the bag power. The recommended value of 119.0 was used for the A-constant. The actual refractive spherical equivalent was calculated and compared with preoperative predictions. Refractive prediction errors were defined as the deviation of the actual postoperative spherical equivalent refraction in diopters from the predicted preoperative spherical equivalent refraction. The patients were divided into three groups according to axial length: <22.0 mm (short eyes), 22.0– 24.5 mm (medium eyes), and >24.5 mm (long eyes), and the refractive prediction errors and mean absolute errors were compared. Results: The mean refractive prediction error was −0.20 ± 0.52D. The mean absolute error was 0.44 ± 0.33D. The mean refractive prediction errors were not significantly different between the 22.0–24.5 mm (medium eyes) and >24.5 mm (long eyes) groups. (P=0.06) The mean absolute errors were not significantly different between the two groups (P=0.10). Conclusion: The SRK/T formula worked well regardless of whether the eyes were medium or long according to the axial length in the flanged intrascleral IOL fixation.

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法兰式巩膜内人工晶体固定中不同轴向长度的屈光预测误差比较

目的：使用 SRK/T 公式评估带瓣巩膜内人工晶体（IOL）固定的屈光预测误差，并比较使用单个人工晶体的轴向长度。方法本研究纳入了 70 名患者（45 名男性和 25 名女性）的 76 只眼睛。手术时的平均年龄为 73.4 ± 12.3 岁。患者使用 PN6A（Kowa）进行了法兰式人工晶体固定术。所有手术均由两名外科医生（Y. K. 和 T. O. ）于 2020 年 1 月至 2022 年 12 月期间在慈惠大学大山医院完成。IOL 功率使用 SRK/T 公式计算，IOL Master 700（卡尔蔡司）作为囊袋功率。A 常量采用建议值 119.0。计算实际屈光球面等值，并与术前预测进行比较。屈光预测误差被定义为术后实际球面等效屈光度与术前预测球面等效屈光度的偏差（以二度数为单位）。根据轴长（24.5 毫米，长眼）将患者分为三组，比较屈光预测误差和平均绝对误差。结果屈光预测误差的平均值为 -0.20 ± 0.52D。平均绝对误差为 0.44 ± 0.33D。平均屈光预测误差在 22.0-24.5 mm（中眼）组和 >24.5 mm（长眼）组之间无明显差异。(P=0.06）两组之间的平均绝对误差无明显差异（P=0.10）。结论：根据法兰式巩膜内人工晶体固定的轴向长度，无论中眼还是长眼，SRK/T公式的效果都很好。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.