Department of Ophthalmology, Samsung Medical Center, Seoul, Korea.
J Refract Surg. 2013 Mar;29(3):200-4. doi: 10.3928/1081597X-20130129-06.
To identify factors that influence near vision after monofocal intraocular lens (IOL) implantation for distance vision.
A retrospective review was conducted of patients who underwent cataract surgery with monofocal IOL implantation from October 2009 to April 2010 at Samsung Medical Center. Eyes were classified as having good (⩾ J4) or poor (< J4) near vision. Factors analyzed included age, sex, intraocular lens (IOL) movement, axial length, pupil size, degree and type of astigmatism, IOL type, total aberration, and higher-order aberrations. Binary logistic regression and odds ratios with 95% confidence intervals were determined.
This retrospective study involved 84 eyes of 84 patients. Thirty-four eyes were classified as having good near vision and 50 eyes as having poor near vision. All groups had a postoperative uncorrected visual acuity greater than 0.2 logMAR (Snellen 20/32) and a refractive error within ± 0.5 diopter of spherical equivalent. Pupil size and axial length were inversely associated with good near vision (P = .034 and .039, respectively). A pupil size smaller than 2.6 mm and an axial length less than 23.0 mm resulted in better near vision than larger measurements after monofocal IOL implantation for distant target.
Among the factors analyzed, small pupil size and short axial length predicted good near vision after phacoemulsification and monofocal IOL implantation.
确定影响单焦点人工晶状体（IOL）植入术后近视力的因素。
回顾性分析 2009 年 10 月至 2010 年 4 月在三星医疗中心接受白内障超声乳化联合单焦点 IOL 植入术的患者。将眼分为近视力良好（⩾ J4）和不良（< J4）。分析的因素包括年龄、性别、IOL 运动、眼轴长度、瞳孔大小、散光程度和类型、IOL 类型、总像差和高阶像差。采用二元逻辑回归和 95%置信区间的比值比进行分析。
这项回顾性研究共涉及 84 例 84 只眼。34 只眼被归类为近视力良好，50 只眼为近视力不良。所有组术后未矫正视力均大于 0.2 logMAR（Snellen 20/32），屈光度在±0.5 屈光度等效球镜范围内。瞳孔大小和眼轴长度与良好的近视力呈负相关（P =.034 和.039）。与较大的测量值相比，单焦点 IOL 植入术后瞳孔小于 2.6mm 和眼轴小于 23.0mm 时，近视力更好。
在分析的因素中，小瞳孔和短眼轴预测了白内障超声乳化联合单焦点 IOL 植入术后良好的近视力。
