Evaluation of the intraocular scattering through brightness reduction by glare using external diffusers to simulate cataracts

• Autorzy: Barrionuevo P. , Colombo E. , Corregidor D. , Jaen M. , Issolio L.
• Języki publikacji: EN

Abstrakty

EN

In this work, we evaluate the feasibility to determine the intraocular scattering by measuring the brightness reduction by glare. A haploscopic system based on the brightness comparison has been developed. This system allows to compare the brightness of a test with a steady glare source in the field of vision, and another one without it. Our goal is to study the sensibility of the proposed methodology to quantify the intraocular scattering. In this first approach, we use physically and psychophysically characterized external diffusers to simulate different degrees of cataracts. The results have been shown in terms of the glare index. This index increases as the level of filter scattering rises, and even more when the diffuser is set up on only one eye. Besides, the system allows to discriminate among slightly different levels of scattering. The repeatability of the results and the resistance to fraud of the methodology have been analyzed.

Słowa kluczowe

EN

brightness; glare; intraocular scattering

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2010
• Tom: Vol. 40, nr 1
• Strony: 63--75
• Opis fizyczny: Bibliogr. 31 poz.

Twórcy

autor

Barrionuevo P.

autor

Colombo E.

autor

Corregidor D.

autor

Jaen M.

autor

Issolio L.

• Instituto de Investigación en Luz, Ambiente y Visión (Universidad Nacional de Tucumán - CONICET), Avda. Independencia 1800, San Miguel de Tucumán (4000), Tucumán, Argentina

Bibliografia

• [1] BEERTHUIZEN J.J.G., FRANSSEN L., LANDESZ M., VAN DEN BERG T.J.T.P., Straylight values 1 month after laser in situ keratomileusis and photorefractive keratectomy, Journal of Cataract and Refractive Surgery 33(5), 2007, pp. 779–783.
• [2] KAUFMAN P.L., ALM A., Cristalino (Lens), [In] Adler’s Physiology of the Eye, 10th Spanish Edition, Elsevier, 2004, pp. 117–158.
• [3] VOS J.J., Disability glare: A state of the art report, CIE-Journal 3(2), 1984, pp. 39–53.
• [4] HOLLADAY L.L., Action of a light-source in the field of view in lowering visibility, Journal of the Optical Society of America 14(1), 1927, pp. 1–9.
• [5] FISHER A.J., CHRISTIE A.W., A note on disability glare, Vision Research 5(9), 1965, pp. 565–571.
• [6] IJSPEERT J.K., DE WAARD P.W.T., VAN DEN BERG T.J.T.P., DE JONG P.T.V.M., The intraocular straylight function in 129 healthy volunteers; dependence on angle, age and pigmentation, Vision Research 30(5), 1990, pp. 699–707.
• [7] VOS J.J., COLE B.L., BODMANN H.W., COLOMBO E., TAKEUCHI T., VAN DEN BERG T.J.T.P., CIEEquations for Disability Glare, Commission Internationale d’Eclairage, CIE Collection on Glare, 2002.
• [8] CAMPBELL F.W., GUBISCH R.W., Optical quality of the human eye, The Journal of Physiology 186(3), 1966, pp. 558–578.
• [9] VOS J.J., WALRAVEN J., VAN MEETEREN A., Light profiles of the foveal image of a point source, Vision Research 16(2), 1976, pp. 215–219.
• [10] VOS J., VAN DEN BERG T., Report on disability glare, CIE Collection on Colour and Vision 135(1), 1999, pp. 1–9.
• [11] DE WAARD P.W., IJSPEERT J.K., VAN DEN BERG T.J., DE JONG P.T., Intraocular light scattering in age-related cataracts, Investigative Ophthalmology and Visual Science 33(3), 1992, pp. 618–625.
• [12] SCHOUTEN J.F., ORNSTEIN L.S., Measurements on direct and indirect adaptation by means of a binocular method, Journal of the Optical Society of America 29(4), 1939, pp. 162–181.
• [13] FRY G., ALPERN M., The effect of peripheral glare source upon the apparent brightness of an object, Journal of the Optical Society of America 43(3), 1953, pp. 189–195.
• [14] COLOMBO E., BARRAZA J., ISSOLIO L., Effect of brief exposure to glare on brightness perception in the scotopic-mesopic range, Lighting Research and Technology 32(2), 2000, pp. 65–69.Evaluation of the intraocular scattering ... 75
• [15] ISSOLIO L.A., BARRAZA J.F., COLOMBO E.M., Time course of brightness under transient glare condition, Journal of the Optical Society of America A 23(2), 2006, pp. 233–238.
• [16] ISSOLIO L., COLOMBO E.M., Brightness for different surround conditions: The effect of transient glare, Perception and Psychophysics 68(4), 2006, pp. 702–709.
• [17] ROSSI A.F., RITTENHOUSE C.D., PARADISO M.A., The representation of brightness in primary visual cortex, Science 273(5278), 1996, pp. 1104–1107.
• [18] ROSSI A.F., PARADISO M.A., Neural correlates of perceived brightness in the retina, lateral geniculate nucleus and striate cortex, The Journal of Neuroscience 19(14), 1999, pp. 6145–6156.
• [19] KINOSHITA M., KOMATSU H., Neural representation of the luminance and brightness of a uniform surface in the macaque primary visual cortex, Journal of Neurophysiology 86(5), 2001, pp. 2559–2570.
• [20] ISSOLIO L., MATRANGA J., BARRIONUEVO P., COMASTRI S., MARTIN G., COLOMBO E., Brightness reduction as a function of the angular position of a glare source, Ópt. Pura Apl. 42(1), 2009, pp. 33–39.
• [21] DE WIT G.C., FRANSSEN L., COPPENS J., VAN DEN BERG T.J.T.P., Simulating the straylight effects of cataracts, Journal of Cataract and Refractive Surgery 32(2), 2006, pp. 294–300.
• [22] STOVER J., Optical Scattering, Measurement and Analysis, McGraw-Hill, Inc. NY, USA, 1995.
• [23] FRANSSEN L., COPPENS J.E., VAN DEN BERG T.J.T.P., Compensation comparison method for assessment of retinal straylight, Investigative Ophthalmology and Visual Science 47(2), 2006, pp. 768–776.
• [24] VAN DEN BERG T.J.T.P., IJSPEERT J.K., Clinical assessment of intraocular straylight, Applied Optics 31(19), 1992, pp. 3694–3696.
• [25] VAN RIJN L.J., NISCHLER C., GAMER D., FRANSSEN L., DE WIT G., KAPER R., VONHOFF D., GRABNER G., WILHELM H., VÖLKER-DIEBEN H.J., VAN DEN BERG T.J.T.P., Measurement of stray light and glare: comparison of Nyktotest, Mesotest, stray light meter, and computer implemented stray light meter, British Journal of Ophthalmology 89(3), 2005, pp. 345–351.
• [26] COLOMBO E., ISSOLIO L., SANTILLÁN J., AGUIRRE R., What characteristics a clinical CSF system has to have?, Optica Applicata 39(2), 2009, pp. 415–428.
• [27] ELLIOTT D.B., SITU P., Visual acuity versus letter contrast sensitivity in early cataract, Vision Research 38(13), 1998, pp. 2047–2052.
• [28] ELLIOTT D.B., Assesment of patients with age-related cataract, Ophthalmic and Physiological Optics 18(Supplement 2), 1998, pp. S51–S61.
• [29] BRAINARD D.H., The Psychophysics Toolbox, Spatial Vision 10(4), 1997, pp. 433–436.
• [30] PELLI D.G., The VideoToolbox software for visual psychophysics: Transforming numbers intomovies, Spatial Vision 10(4), 1997, pp. 437–442.
• [31] WATSON A.B., PELLI D.G., QUEST: A Bayesian adaptive psychometric method, Perception and Psychophysics 33(2), 1983, pp. 113–120.