Voytsekhivskyy Oleksiy V, Biran Amit, Achiron Asaf, Yahalomi Tal, Vega Yakov, Elbaz Uri, Levinger Eliya
Department of Corneal Pathology, Ophthalmic Oncology and Oculoplasty, Kyiv Clinical Ophthalmology Hospital Eye Microsurgery Center, Kyiv, Ukraine.
Department of Ophthalmology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
Clin Ophthalmol. 2025 Jul 31;19:2521-2528. doi: 10.2147/OPTH.S537931. eCollection 2025.
To assess the contribution of each optional parameter to the IOL power calculation and evaluate the effect of omitting biometric variables (ACD, LT, WTW) using the VRF-G formula.
A total of 501 eyes from 501 consecutive patients included in the study underwent cataract surgery with in-the-bag implantation of one-piece soft hydrophobic acrylic posterior chamber IOLs, AcrySof IQ SN60WF (Alcon Labs, Fort Worth, TX, USA). The primary calculation comprised five measured variables, and IOL power was recalculated for different combinations of omitting ACD, LT, and WTW. Outcome measurements included the difference in IOL power calculations between different omission combinations.
Omitting any of the biometric variables resulted in a significant difference in the mean difference in IOL power calculation (ranging from 0.029 to 0.108 diopters), except for WTW omission alone (0.002 diopters). ACD proved to have the most impact, with its omission resulting in larger differences in power calculations (range: 0.177-0.248 diopters) compared to combinations where ACD was not omitted (range: 0.057-0.141 diopters). The shortest eyes were most affected by ACD omission.
The study highlights the importance of ACD in IOL power calculations, particularly for shorter eyes. WTW and LT were found to be less important when using the VRF-G formula for IOL power calculations.
评估每个可选参数对人工晶状体（IOL）屈光度计算的贡献，并使用VRF - G公式评估省略生物测量变量（前房深度[ACD]、晶状体厚度[LT]、白到白距离[WTW]）的影响。
该研究共纳入501例连续患者的501只眼，均接受了白内障手术，术中囊袋内植入一片式软性疏水丙烯酸酯后房型IOL，即AcrySof IQ SN60WF（美国德克萨斯州沃思堡的爱尔康实验室）。初始计算包含五个测量变量，针对省略ACD、LT和WTW的不同组合重新计算IOL屈光度。结果测量包括不同省略组合之间IOL屈光度计算的差异。
省略任何一个生物测量变量都会导致IOL屈光度计算的平均差异出现显著差异（范围为0.029至0.108屈光度），但单独省略WTW除外（0.002屈光度）。事实证明，ACD的影响最大，与未省略ACD的组合（范围：0.057 - 0.141屈光度）相比，省略ACD会导致屈光度计算出现更大差异（范围：0.177 - 0.248屈光度）。最短的眼睛受省略ACD的影响最大。
该研究强调了ACD在IOL屈光度计算中的重要性，尤其是对于较短的眼睛。在使用VRF - G公式进行IOL屈光度计算时发现WTW和LT的重要性较低。
