Department of Ophthalmology, Show Chwan Memorial Hospital, Changhua, Taiwan.
Department of Optometry, College of Medicine and Life Science, Chung Hwa University of Medical Technology, Tainan, Taiwan.
BMC Ophthalmol. 2019 Aug 19;19(1):188. doi: 10.1186/s12886-019-1195-x.
To evaluate the correlating and predicting factors of visual outcome after implantation of newly developed diffractive quadrifocal intraocular lens (IOL).
A retrospective longitudinal study was conducted. Patients who underwent diffractive quadrifocal IOL implantation with a follow-up period longer than six months and records of wavefront aberrometer within one week perioperatively were enrolled. Accordingly, a total of 73 eyes from 73 patients were included. The postoperative distance and near visual acuity, ocular aberrations and postoperative symptoms were collected. The correlation and predictability between ocular aberrations and the postoperative visual outcome were evaluated.
The corrected distance visual acuity (CDVA) one month postoperatively was significantly better than the preoperative status, and insignificant improvement was found six months postoperatively. Preoperative Tracey refraction spherical equivalent (TRSE), angle alpha, and spherical aberration (SA) were significantly correlated with postoperative CDVA and near corrected visual acuity (NCVA). For postoperative ocular aberrations, TRSE, angle alpha, and SA were significantly correlated with CDVA six months postoperatively and NCVA, while the trefoil, internal higher order aberration (HOA) and total HOA were associated with NCVA. Preoperative angle alpha could predict all postoperative visual performances, while postoperative TRSE and angle alpha could predict the CDVA six months postoperatively and NCVA. A large angle alpha is associated with visual disturbance and dissatisfaction.
The angle alpha preoperatively and postoperatively was correlated with the postoperative vision and could predict visual outcome in patients who had diffractive quadrifocal IOL implanted. Furthermore, the majority of ocular aberrations were also associated with certain postoperative vision.
评估新开发的衍射四焦点人工晶状体（IOL）植入后视力结果的相关和预测因素。
进行回顾性纵向研究。纳入接受衍射四焦点 IOL 植入术且术后随访时间超过 6 个月、且术后 1 周内有波前像差仪记录的患者。共有 73 名患者的 73 只眼符合纳入标准。收集术后远距和近距视力、眼像差和术后症状。评估眼像差与术后视觉结果之间的相关性和可预测性。
术后 1 个月的矫正远视力（CDVA）明显优于术前，术后 6 个月时无明显改善。术前 Tracey 等效球镜（TRSE）、角度α和球差（SA）与术后 CDVA 和近距矫正视力（NCVA）显著相关。对于术后眼像差，TRSE、角度α和 SA 与术后 6 个月时的 CDVA 和 NCVA 显著相关，而三叶差、内高阶像差（HOA）和总 HOA 与 NCVA 相关。术前角度α可以预测所有术后视觉表现，而术后 TRSE 和角度α可以预测术后 6 个月时的 CDVA 和 NCVA。大角度α与视觉干扰和不满有关。
术前和术后的角度α与术后视力相关，可预测接受衍射四焦点 IOL 植入的患者的视力结果。此外，大多数眼像差也与某些术后视力相关。
