Influence of interocular differences in the Strehl ratio on binocular summation

The aim of this work is to determine the influence of interocular differences in retinal image quality on binocular visual performance. We measured the contrast sensitivity function (both monocular and binocular) and we computed binocular summation. Data on retinal image quality were taken from a double‐pass device (oqas™, Optical Quality Analysis System; Visiometrics SL. Tarrasa, Spain), providing the Strehl ratio as a parameter to quantify retinal image quality. A total of 28 observers took part in the experiments. Binocular summation for the contrast sensitivity function was found to be significantly (p < 0.001) correlated with interocular differences in the Strehl ratio. The higher the interocular differences in the Strehl ratio, the lower the binocular summation. Binocular summation is less effective as the interocular differences in retinal image increase.

[1]  S. Pardhan.  A comparison of binocular summation in young and older patients. , 1996, Current eye research.

[2]  Enrique Hita,et al.  Correlation between image quality and visual performance , 2008 .

[3]  Shahina Pardhan,et al.  The effect of monocular defocus on binocular contrast sensitivity , 1990, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[4]  D. Williams,et al.  Monochromatic aberrations of the human eye in a large population. , 2001, Journal of the Optical Society of America. A, Optics, image science, and vision.

[5]  J. A. Díaz,et al.  Binocular summation of chromatic changes as measured by visual reaction time , 2002, Perception & psychophysics.

[6]  Ramón Gutiérrez,et al.  Binocular visual performance after LASIK. , 2005, Journal of refractive surgery.

[7]  P Artal,et al.  Comparison of double-pass estimates of the retinal-image quality obtained with green and near-infrared light. , 1997, Journal of the Optical Society of America. A, Optics, image science, and vision.

[8]  Enrique Hita,et al.  Interocular Differences in Higher-Order Aberrations on Binocular Visual Performance , 2008, Optometry and vision science : official publication of the American Academy of Optometry.

[9]  N. Château,et al.  Effect of Induced Anisometropia on Binocular Through-Focus Contrast Sensitivity , 2001, Optometry and vision science : official publication of the American Academy of Optometry.

[10]  P Artal,et al.  Effects of aging in retinal image quality. , 1993, Journal of the Optical Society of America. A, Optics and image science.

[11]  Enrique Hita,et al.  Optimization of color reproduction on CRT-color monitors , 1999 .

[12]  Technical Note: Comparison of the wavefront aberrations between natural and pharmacological pupil dilations , 2007, Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians.

[13]  P Artal,et al.  Determination of the point-spread function of human eyes using a hybrid optical-digital method. , 1987, Journal of the Optical Society of America. A, Optics and image science.

[14]  David Williams,et al.  Visual performance after correcting the monochromatic and chromatic aberrations of the eye. , 2002, Journal of the Optical Society of America. A, Optics, image science, and vision.

[15]  F. Campbell,et al.  The effect of chromatic aberration on visual acuity , 1967, The Journal of physiology.

[16]  S. Pardhan.  A comparison of binocular summation in the peripheral visual field in young and older patients. , 1997, Current eye research.

[17]  D. G. Green,et al.  Monocular versus Binocular Visual Acuity , 1965, Nature.

[18]  Junzhong Liang,et al.  Aberrations and retinal image quality of the normal human eye. , 1997, Journal of the Optical Society of America. A, Optics, image science, and vision.

[19]  Jaume Pujol,et al.  Optical Quality Analysis System; Instrument for objective clinical evaluation of ocular optical quality. , 2004, Journal of cataract and refractive surgery.

[20]  Jaume Pujol,et al.  Comparison of the retinal image quality with a Hartmann-Shack wavefront sensor and a double-pass instrument. , 2006, Investigative ophthalmology & visual science.

[21]  Enrique Hita,et al.  Upper disparity limit after LASIK. , 2008, Journal of the Optical Society of America. A, Optics, image science, and vision.

[22]  P. M. Prieto,et al.  Effects of interactions among wave aberrations on optical image quality , 2006, Vision Research.

[23]  A. Bron,et al.  Effect of age on contrast sensitivity function: uniocular and binocular findings. , 1985, The British journal of ophthalmology.