实测与理论瞳孔直径下全角膜与前角膜球面像差的差异性分析  

Discrepancies between Total and Anterior Corneal Spherical Aberrations Calculated on the Basis of the Measured and Theoretical Pupil Diameters

作　　者：赵丽君 程胜男 吴名峰 李玉芷 黄渝侃[1] 

机构地区：[1]华中科技大学同济医学院附属协和医院眼科,湖北 武汉

出　　处：《眼科学》2020年第3期201-208,共8页Hans Journal of Ophthalmology

摘　　要：【目的】观察不同年龄段人群实测与6.0 mm瞳孔直径下全角膜和前角膜球面像差的差异。【方法】观察不同年龄段(20~29, 30~39, 40~49, 50~59, 60~69, 70~79)共100例受试者,通过Sirius眼前节分析系统检测不同瞳孔直径下(2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm)全角膜和前角膜球面像差及暗环境下实测瞳孔直径,通过数学拟合曲线计算出该实测瞳孔直径下全角膜和前角膜的球面像差值,分别比较其与6.0 mm瞳孔直径下全角膜与前角膜球面像差之间的差异。【结果】实测瞳孔直径与年龄呈负相关(P 0.05)。在60~69,70~79年龄段,实测全角膜和前角膜球面像差均显著低于6.0 mm瞳孔直径下对应参数(P 【0.05)。在20~29,30~39,70~79年龄段,实测全角膜与前角膜球面像差间有显著性差异(P 【0.05);在6.0 mm瞳孔直径下,全角膜球面像差值在30~39,40~49,60~69年龄段显著低于前角膜对应值(P 【0.05)。【结论】老年人群中实测瞳孔直径下全和前角膜球面像差均显著小于6.0 mm瞳孔直径下对应参数,此差异与老年人群实际平均瞳孔直径较小有关。在实测和6.0 mm瞳孔直径下,全与前角膜球面像差在部分年龄段存在差异,两者有显著性差异的年龄段分布不同。所测前角膜球面像差不能完全代替全角膜球面像差,建议以实测全角膜球面像差值作为白内障手术选择消球差人工晶状体类型的依据。Objective: To compare the difference between total and anterior corneal spherical aberrations calculated on the basis of the pupil diameters of 6.0 mm and the actual measurements in different age groups. Methods: A total of 100 subjects in different age groups (20 - 29 years old, 30 - 39 years old, 40 - 49 years old, 50 - 59 years old, 60 - 69 years old, 70 - 79 years old) were examined using Sirius anterior segment analytic system. Their total corneal spherical aberrations (TCSA) and anterior corneal spherical aberrations(ACSA) were detected on the basis of different machine-provided pupil diameters (2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 4.5 mm, 5.0 mm, 5.5 mm, 6.0 mm, 6.5 mm, 7.0 mm) and the scotopic pupil diameters were recorded as measured pupil diameters in the dark room. TCSA and ACSA based on the machine-measured pupil diameter was calculated through fitting curves, and compared to the TCSA and ACSA at a theoretical 6-mm pupil diameter. Results: The measured pupil diameter was negatively correlated with age (P

关 键 词：角膜 球面像差 瞳孔直径 

分 类 号：R47[医药卫生—护理学]