Measurement of stray light and glare: comparison of Nyktotest, Mesotest, stray light meter, and computer implemented stray light meter

Rijn, L.J. van; Nischler, C.; Gamer, Daphne; Franssen, Luuk; Wit, G. de; Kaper, R; Vonhoff, D.J.; Grabner, Günther; Wilhelm, H.; Völker-Dieben, H. J. M.; Berg, Thomas

doi:10.1136/bjo.2004.044990

Cited by 60 publications

(67 citation statements)

References 35 publications

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“…The straylight meters performed clearly better. The earlier paper 34 reported on related issues. In short: regarding discriminative ability, i.e.…”

Section: Discussionmentioning

confidence: 99%

“…An overview of this study was reported before. 34 The present report focuses on the comparison between the glare and straylight tests.…”

Section: Methodsmentioning

confidence: 99%

“…Part of this study was reported before. 34 Second, this paper will discuss how the intimate relationship between glare and straylight can be understood and derived in practice. To translate straylight values into practical glare effects, calculations were made based on data in the literature regarding typical night driving situations, including the typical state of adaptation of the eye and values for the brightness of head lamps.…”

Section: Introductionmentioning

confidence: 99%

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Disability Glare in the Aging Eye. Assessment and Impact on Driving☆

Berg

Rijn

Kaper-Bongers

et al. 2009

Journal of Optometry

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PURPOSE:To compare different methods for the assessment of disability glare sensitivity in the elderly, to arrive at an objective assessment of the condition of the eye. To delineate the importance of straylight values in vision. METHODS: Three groups of subjects were studied: 1) Young subjects without any eye disease, 2) elderly subjects without any eye disease and 3) elderly subjects with (early) cataract in at least one eye. All subjects underwent 2 glare tests, 2 straylight tests, ETDRS visual acuity test, Pelli Robson contrast sensitivity test, refraction, LOCS III cataract classification. Straylight was quantified by means of the straylight parameter s. RESULTS: Repeatability, discriminative ability, and added value as compared to visual acuity were low for the glare tests and good for the straylight measurements. For young normal subjects, with log(s)=0.9, the standard glare situation with low beams gives a contrast reduction of 1.3, whereas for the healthy 77 year olds this increases to 2. With cataract hardly affecting visual acuity, log(s) can be as high as 1.8, resulting in a contrast reduction of 3.4. CONCLUSION: Straylight measurement is of relevance for the assessment of the glare-related hindrance during driving, and can be used to objectify complaints and aid in the decision-making regarding cataract surgery. (J Optom 2009;2:112-118 ©2009 Spanish Council of Optometry) KEY WORDS: straylight; glare sensitivity; disability glare; CIE; aging; driving. RESUMEN OBJETIVO:Comparar diferentes métodos para medir la sensibilidad al deslumbramiento perturbador en sujetos de edades avanzadas, con el fin además de lograr una valoración objetiva de las afecciones oculares. Definir la importancia que tiene la luz dispersa (parásita) sobre la visión. MÉTODOS: Se estudiaron tres grupos de sujetos: 1) Sujetos jóvenes sin ningún tipo de afección ocular, 2) sujetos de edad avanzada sin ningún tipo de afección ocular y 3) sujetos de edad avanzada con cataratas (incipientes) en, al menos, uno de los ojos. A todos los sujetos se les realizaron, entre otras, 2 pruebas de deslumbramiento y 2 pruebas de luz dispersa, se les midió la agudeza visual mediante optotipos ETDRS (siglas en inglés del Estudio sobre el tratamiento temprano de la retinopatía diabética), la sensibilidad al contraste con el test de Pelli-Robson, la refracción, y se clasificó la catarata (para sujetos del tercer grupo) utilizando el Sistema de Clasificación de Opacidades del Cristalino( o sus siglas en inglés, LOCS III). La luz dispersa (parásita) se cuantificó por medio del parámetro de luz dispersa s. RESULTADOS: La repetibilidad, la capacidad discriminativa, y el valor añadido, resultaron ser bajos para los tests de deslumbramiento pero buenos para las medidas de la luz dispersa (en comparación con los valores que proporciona la medida de la agudeza visual). Para los sujetos jóvenes sin patologías oculares, con log(s)=0,9, la situación habitual de deslumbramiento con haces bajos causa una reducción del contraste del 1,3, mientras que para l...

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“…The straylight meters performed clearly better. The earlier paper 34 reported on related issues. In short: regarding discriminative ability, i.e.…”

Section: Discussionmentioning

confidence: 99%

“…An overview of this study was reported before. 34 The present report focuses on the comparison between the glare and straylight tests.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Disability Glare in the Aging Eye. Assessment and Impact on Driving☆

Berg

Rijn

Kaper-Bongers

et al. 2009

Journal of Optometry

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“…A first publication on 20 young volunteers reported excellent validity and reliability in clinical tests, as well as resistance to fraud [8]. Another study found advantages compared to the non-computerized straylight meter [9].…”

Section: Introductionmentioning

confidence: 99%

Reproducibility of straylight measurement by C-Quant for assessment of retinal straylight using the compensation comparison method

Guber,

Bachmann,

Guber

et al. 2011

Graefes Arch Clin Exp Ophthalmol

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Background Straylight gives the appearance of a veil of light thrown over a person's retinal image when there is a strong light source present. We examined the reproducibility of the measurements by C-Quant, and assessed its correlation to characteristics of the eye and subjects' age. Participants and Methods Five repeated straylight measurements were taken using the dominant eye of 45 healthy subjects (age 21-59) with a BCVA of 20/20: 14 emmetropic, 16 myopic, eight hyperopic and seven with astigmatism. We assessed the extent of reproducibility of straylight measures using the intraclass correlation coefficient. Results The mean straylight value of all measurements was 1.01 (SD 0.23, median 0.97, interquartile range 0.85-1.1). Per 10 years of age, straylight increased in average by 0.10 (95%CI 0.04 to 0.16, p<0.01]. We found no independent association of refraction (range −5.25 dpt to +2 dpt) on straylight values (0.001; 95%CI −0.022 to 0.024, p=0.92). Compared to emmetropic subjects, myopia reduced straylight (−.011; −0.024 to 0.02, p=0.11), whereas higher straylight values (0.09; −0.01 to 0.20, p=0.09) were observed in subjects with blue irises as compared to darkcolored irises when correcting for age. The intraclass correlation coefficient (ICC) of repeated measurements was 0.83 (95%CI 0.76 to 0.90). Conclusions Our study showed that straylight measurements with the C-Quant had a high reproducibility, i.e. a lack of large intra-observer variability, making it appropriate to be applied in long-term follow-up studies assessing the long-term effect of surgical procedures on the quality of vision.

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“…Oculus Instruments (Oculus, Optikgeräte, Wetzlar-Dutenhofen, German) have recently marketed the C-Quant Stray light Meter ® (Figure 3) developed by van den Berg and Ijspeert (28)(29)(30) .…”

Section: Intraocular Stray Lightmentioning

confidence: 99%

Quality of vision in refractive and cataract surgery, indirect measurers: review article

Parede

Torricelli

Mukai

et al. 2013

Arq. Bras. Oftalmol.

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Visual acuity is the measurement of an individual's ability to recognize details of an object in a space. Visual function measurements in clinical ophthalmology are limited by factors such as maximum contrast and so it might not adequately reflect the real vision conditions at that moment as well as the subjective aspects of the world perception by the patient. The objective of a successful vision-restoring surgery lies not only in gaining visual acuity lines, but also in vision quality. Therefore, refractive and cataract surgeries have the responsibility of achieving quality results. It is difficult to define quality of vision by a single parameter, and the main functional-vision tests are: contrast sensitivity, disability glare, intraocular stray light and aberrometry. In the current review the different components of the visual function are explained and the several available methods to assess the vision quality are described.

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Measurement of stray light and glare: comparison of Nyktotest, Mesotest, stray light meter, and computer implemented stray light meter

Cited by 60 publications

References 35 publications

Disability Glare in the Aging Eye. Assessment and Impact on Driving☆

Disability Glare in the Aging Eye. Assessment and Impact on Driving☆

Reproducibility of straylight measurement by C-Quant for assessment of retinal straylight using the compensation comparison method

Quality of vision in refractive and cataract surgery, indirect measurers: review article

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