ANALYSIS OF INTRAOCULAR STRAYLIGHT, ESPECIALLY IN RELATION TO AGE

被引：160
作者：
VANDENBERG, TJTP
机构：
[1] The Netherlands Ophthalmic Research Institute, Laboratory of Medical Physics and Informatics, University of Amsterdam
来源：
OPTOMETRY AND VISION SCIENCE | 1995年 / 72卷 / 02期
关键词：
AGING; LIGHT SCATTERING; STRAYLIGHT; VISUAL FUNCTION; GLARE; CONTRAST;
D O I：
10.1097/00006324-199502000-00003
中图分类号：
R77 [眼科学];
学科分类号：
100212 ;
摘要：
Purpose. To analyze straylight resulting from different sources (cornea, lens, wall translucency, and fundus reflectance) in combination with different properties (age and pigmentation). To give formulas for straylight calculations. Methods. In straylight on the retina multiple scattering can be assumed to be unimportant. Consequently, an additive model can be applied. Results. An efficient parameter to quantify straylight is the ''straylight parameter'' s(theta), with theta the scatter angle. The model reads s(theta) = s(cornea)(theta) + s(lens)(theta) + s(wall)(theta) + s(fundus)(theta), and each of these sources is analyzed as s(x)(theta) = s(x,base)(theta) + a(age)*s(x,age)(theta) + p(pigm.)*s(x,pigm.)(theta). Conclusions. The most important effects, viz., s(lens,age), s(wall+fundus,pigm.) and s(cornea+lens+fundus,base) as well as a(age) and p(pigm.) were estimated. With the straylight parameter different effects of straylight, notably its disabling effect of contrast reduction, follow directly.
引用
收藏
页码：52 / 59
页数：8
相关论文
共 50 条
  • [1] Guth S.L., On neural inhibition, contrast effects and visual sensitivity, Vision Res, 13, pp. 937-957, (1973)
  • [2] Vos J.J., A state of the art report, Disability Glare Commission International De I’Eclairage Journal, 3-2, pp. 39-53, (1984)
  • [3] Van Den Berg T., On the relation between glare and straylight, Doc Ophthalmol, 78, pp. 177-181, (1991)
  • [4] Van Den Berg T., On the relation between intraocular straylight and visual function parameters, Invest Ophthalmol Vis Sci, 35, pp. 2659-2660, (1994)
  • [5] Paulsson L.E., Sjostrand J., Contrast sensitivity in the presence of glare light, Invest Ophthalmol Vis Sci, 19, pp. 401-406, (1980)
  • [6] Van Den Berg T., Importance of pathological intraocular light scatter for visual disability, Doc Ophthalmol, 61, pp. 327-333, (1986)
  • [7] Van Den Berg T., Ijspeert J.K., Clinical assessment of intraocular straylight, Appl Opt, 31, pp. 3694-3696, (1992)
  • [8] Elliott D.B., Bullimore M.A., Assessing the reliability, discriminative ability and validity of disability glare tests, Invest Ophthalmol Vis Sci, 34, pp. 108-119, (1993)
  • [9] Elliott D.B., Evaluating visual function in cataract, Optom Vis Sci, 70, pp. 896-902, (1993)
  • [10] Ijspeert J.K., De Waard P., Van Den Berg T., De Jong P., The intraocular stray light function in 129 healthy volunteers
12345