Reliability of the compensation comparison stray-light measurement method

被引:64
作者
Coppens, Joris E.
Franssen, Luuk
van Rijn, L. J.
van den Berg, Thomas J. T. P.
机构
[1] NORI, OST, NL-1105 BA Amsterdam, Netherlands
[2] Vrije Univ Amsterdam, Med Ctr, Amsterdam, Netherlands
关键词
glare; image quality; opthalmology; scattering; stray light; vision;
D O I
10.1117/1.2209555
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The compensation comparison (CC) method is a psychophysical technique to measure retinal stray light. It uses a two alternative forced choice (2AFC) measurement paradigm. The 25 binary (0 and 1) responses resulting from the 2AFC test are analyzed using maximum likelihood estimates. The likelihood function is used to give two quantities: the most likely stray-light level of the eye under investigation, and the accuracy of this estimate [called expected standard deviation (ESD)]. The CC method is used in 2422 subjects of the GLARE study. Each eye is tested twice to allow analysis of measurement repeatability. Furthermore, the large amount of responses is used to evaluate the shape of the psychometric function, for which a mathematical model is used. The shape of the psychometric function found by averaging the 0 and 1 responses fit well to the model function. Data sorted according to ESD show differences in the shape of the psychometric function between good and bad observers. These different shapes for the psychometric function are used to reanalyze the data, but the stray-light results remain virtually identical. ESD proves to be an efficient tool to detect unreliable measurements. In clinical practice, ESD may be used to decide whether to repeat a measurement. (c) 2006 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页数:9
相关论文
共 12 条
[1]   Visual acuity and contrast sensitivity for individual Sloan letters [J].
Alexander, KR ;
Xie, W ;
Derlacki, DJ .
VISION RESEARCH, 1997, 37 (06) :813-819
[2]   Wavelength dependence of intraocular straylight [J].
Coppens, JE ;
Franssen, L ;
van den Berg, TJTP .
EXPERIMENTAL EYE RESEARCH, 2006, 82 (04) :688-692
[3]   Compensation comparison method for assessment of retinal straylight [J].
Franssen, L ;
Coppens, JE ;
van den Berg, TJTP .
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE, 2006, 47 (02) :768-776
[4]   EFFICIENT ESTIMATION OF SENSORY THRESHOLDS [J].
HARVEY, LO .
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS, 1986, 18 (06) :623-632
[5]   TEACHING ABOUT APPROXIMATE CONFIDENCE-REGIONS BASED ON MAXIMUM-LIKELIHOOD-ESTIMATION [J].
MEEKER, WQ ;
ESCOBAR, LA .
AMERICAN STATISTICIAN, 1995, 49 (01) :48-53
[6]   ON THE PSYCHOMETRIC FUNCTION FOR CONTRAST DETECTION [J].
NACHMIAS, J .
VISION RESEARCH, 1981, 21 (02) :215-223
[7]  
TREUTWEIN B, 1995, VISION RES, V35, P2503, DOI 10.1016/0042-6989(95)00016-X
[8]   THE INTRAOCULAR STRAYLIGHT FUNCTION IN SOME HEREDITARY CORNEAL DYSTROPHIES [J].
VANDENBERG, TJTP ;
HWAN, BS ;
DELLEMAN, JW .
DOCUMENTA OPHTHALMOLOGICA, 1993, 85 (01) :13-19
[9]   ANALYSIS OF INTRAOCULAR STRAYLIGHT, ESPECIALLY IN RELATION TO AGE [J].
VANDENBERG, TJTP .
OPTOMETRY AND VISION SCIENCE, 1995, 72 (02) :52-59
[10]   IMPORTANCE OF PATHOLOGICAL INTRAOCULAR LIGHT SCATTER FOR VISUAL DISABILITY [J].
VANDENBERG, TJTP .
DOCUMENTA OPHTHALMOLOGICA, 1986, 61 (3-4) :327-333