研究了一种用于测量人眼波前像差的新型主观式波前像差仪,给出了工作原理和实现方案.采用先进的三光路设计方法实现光学系统的设计,采用多线程、视频捕捉、图像处理、单片机及步进电机的控制等关键技术,实现了瞳孔的三维实时自动跟踪.该像差仪能测量出人眼的全部七阶像差,采用Zernike多项式、两维和三维波前像差图对人眼像差进行了描述,给出了计算各项波前像差的均方根(RMS)的公式.通过对57人(110只眼)的进行三次临床测量,采用SPSS统计软件对测量得到的各阶波前像差的RMS逐级递减值进行两两比较,无差异性(P＞0.05),结果表明该像差仪测量的重复性好,准确性高.
参考文献
| [1] | Seiler T, Kaemmerer M, Mierdel P, et al. Ocular optical aberrations after photorefractive keratectomy for myopia and myopic astigmatism [J]. Arch Ophthalmol, 2000, 118: 17-21. |
| [2] | Olive KM, Hemenger RP, Corbett MC, et al. Comparison of corneal aberrations induced by photorefractive keratectomy [J]. J. Refract Surg, 1997, 13: 246-254. |
| [3] | Liang J, Williams D R. Aberrations and retinal image quality of the normal human eye [J]. J. Optical Society of America, 1997, 14: 2873-2883. |
| [4] | Martinez C E, Applegate R A, Klyce S D, et al. Effect of papillary dilation on corneal optical aberrations after photorefractive keratectomy [J]. Arch Ophthalmol, 1998, 116: 1053-1062. |
| [5] | Oshika T, Klyce S D, Applegate R A, et al. Comparison of corneal wavefront aberrations after photorefractive keratectomy and laser in situ keratomileusis [J]. Am. J. Ophthalmol, 1999, 127: 1-7. |
| [6] | Liang J, Williams D R. Supernormal vision and high-resolution retinal imaging through adaptive optics [J]. J.Opt. Soc. Am., 1997, A14(11): 2884-2892. |
| [7] | Artal P, Marcos S, et al. Odd aberrations and double-pass measurements of retinal image quality [J]. J. Opt.Soc. Am., 1997, A12(2): 195-201. |
| [8] | Prieto P M, Vargas-Martin F. Analysis of the performance of the Hartmann-Shack sensor in the human eye [J].J. Opt. Soc. Am., 2000, A17(8): 1388-1398. |
| [9] | He J C, Marcos S. Measurement of the wave-front aberration of the eye by a fast psychophysical procedure [J].J. Opt. Soc. Am., 1998, A15: 2449-2455. |
| [10] | Maeda N. Wavefront technology in ophthalmology [J]. Curr Opin Ophthalmol, 2001, 12: 294-299. |
| [11] | Applegate R A, Thibos L N, Hilmantel G. Optics of aberroscopy and super vision [J]. Journal of Cataract and Refractive Surgery, 2001, 27(7): 1093-1107. |
| [12] | David Huang. Physics of customized corneal aberration [A]. in: Customized Corneal Ablation [M]. Thorofare:SLACK, 2001. 51-62. |
| [13] | Thibos L N, Applegate R A, James T. Schwiegerling standards for reporting the optical aberrations of eyes [A].in: Customized Corneal Ablation [M]. Thorofare: SLACK, 2001. 347-361. |
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