中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (8): 1183-1189.doi: 10.3969/j.issn.2095-4344.2016.08.018

• 材料力学及表面改性 material mechanics and surface modification • 上一篇    下一篇

非球面与球面Toric人工晶状体置入白内障后的视觉质量比较

楚 妙1,赵丽娜1,程玉瑛1,孙 涛2   

  1. 1河北医科大学第一医院,河北省石家庄市 050031;2河北北方学院附属第一医院,河北省张家口市 075000
  • 收稿日期:2016-01-04 出版日期:2016-02-19 发布日期:2016-02-19
  • 作者简介:楚妙,女,1981年生,汉族,主治医师,2008年河北医科大学毕业,硕士,主要从事白内障眼外伤研究。
  • 基金资助:
    河北省卫生厅项目(20130589)

Comparison of visual quality after implantation of aspheric and spherical Toric intraocular lens in cataract surgery

Chu Miao1, Zhao Li-na1, Cheng Yu-ying1, Sun Tao2   

  1. 1First Affiliated Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China; 2First Affiliated Hospital of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Received:2016-01-04 Online:2016-02-19 Published:2016-02-19
  • About author:Chu Miao, Master, Attending physician, First Affiliated Hospital of Hebei Medical University, Shijiazhuang 050031, Hebei Province, China
  • Supported by:

    a grant from Hebei Provincial Health Department, No. 20130589

摘要:

文章快速阅读:

文题释义:

人工晶状体:是指人工合成材料制成的一种特殊透镜,它的成分包括硅胶、聚甲醛丙烯酸甲酯、水凝胶等。人工晶状体的形状功能类似人眼的晶状体,具有质量轻、光学性能高、无抗原性、无致炎性、无致癌性和生物降解等特性。
散光:指平行光线经过眼球屈光系统折射后,并不聚为单一点,而是散开的许多光像,可分为不规则散光和规则散光两类。

  

背景:球面Toric人工晶状体可有效纠正白内障患者的术前散光问题,而后出现的非球面Toric晶状体能否较球面Toric晶状体更好地提高白内障患者术后视觉质量?
目的:探讨非球面Toric人工晶状体在提高视觉质量方面的作用。
方法:纳入白内障合并角膜散光患者73例(80眼),其中男37例,女36例,年龄47-83岁,试验组(n=36)置入非球面Toric人工晶状体,对照组(n=37)置入球面Toric人工晶状体。置入后3个月进行晶状体轴位、裸眼视力、矫正视力、残余散光、对比敏感度、波前像差及视觉质量检查。
结果与结论:置入后3个月,两组晶状体轴位、裸眼视力、矫正视力、残余散光比较差异均无显著性意义,无状体偏斜与晶状体偏中心,没有需要取出晶状体或进行二次调整者;试验组暗视及暗视眩光状态下的中、高空间频率对比敏感度明显高于对照组(P < 0.05),瞳孔直径5.0 mm下的总高阶像差和球差及瞳孔直径3.0 mm下的球差明显小于对照组(P < 0.05);两组间客观散射指数、斯特列尔比值、MTF截止空间频率、9%对比度视力、20%对比度视力、100%对比度视力视觉质量参数比较差异均无显著性意义。结果表明,两种人工晶状体在改善散光、提高裸眼视力方面具有相似的效果,但非球面Toric人工晶状体在改善暗视力、总高阶相差及球面相差方面优于球面Toric人工晶状体。

 中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程 

 ORCID: 0000-0002-8304-5743(楚妙)

关键词: 生物材料, 材料相容性, Toric人工晶状体, 非球面, 球面, 视觉质量, 对比敏感度, 白内障

Abstract:

 

BACKGROUND: Spherical Toric intraocular lens can effectively correct the preoperative astigmatism of cataract patients, but it is unclear whether the aspheric Toric lens is better than the spherical Toric lens to improve the quality of vision.
OBJECTIVE: To evaluate the optical quality after implantation of aspheric toric intraocular lens in cataract surgery.
METHODS: Seventy-three cataract patients with corneal astigmatism (80 eyes) were enrolled, including 37 males and 36 females, aged 47-83 years. Among them, 36 cases were implanted with aspheric Toric intraocular lens (test group), and the other 37 cases were implanted with spherical Toric intraocular lens (control group). Postoperative examinations were performed at 3 months, including axial intraocular lens, uncorrected visual acuity, corrected visual acuity, residual astigmatism, contrast sensitivity, and wavefront aberration.
RESULTS AND CONCLUSION: Three months after implantation, the axial view, uncorrected visual acuity, corrected visual acuity and residual astigmatism showed no differences between the two groups; no shape deviation and lens decentration occurred; there was no case required to remove the lens or subjected to secondary adjustment. In the test group, the moderate and high spatial frequency contrast sensitivity at the scotopic or scotopic glare state was significantly higher than that in the control group (P < 0.05), the total higher order aberrations and spherical aberrations at a pupil diameter of 5.0 mm and spherical aberration at a pupil diameter of 3.0 mm were significantly less than those in the control group (P < 0.05). Additionally, there were no differences in scattering index, cut-off frequency of the modulation transfer function, Strehl ratio and visual acuity at 9%, 20% and 100% contrast between the two groups. These findings indicate that the aspheric and spherical toric intraocular lenses have similar effects in improving the astigmatism and raising the uncorrected visual acuity, but the former one is superior to the latter one in improving scotopic vision, and total higher order aberrations and spherical aberrations.
中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程