Effect of aging on the monochromatic aberrations of the human eye

Calver, Richard; Cox, Michael J.; Elliott, David B.

doi:10.1364/josaa.16.002069

Cited by 148 publications

(85 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…5,6 Therefore, the total ocular aberration increases with age, leading to deterioration of optical quality in older subjects. [7][8][9][10] When the crystalline lens is replaced by an intraocular lens (IOL) in cataract surgery, further changes may occur. It has been shown that ocular higher-order aberration in pseudophakic eyes is comparable with that in phakic eyes of subjects of the same age.…”

Section: Introductionmentioning

confidence: 99%

Correlation of higher-order wavefront aberrations with visual function in pseudophakic eyes

Hayashi

Yoshida

Hayashi

2007

Eye

View full text Add to dashboard Cite

Aim To study the correlation between higher-order wavefront aberrations and visual function in eyes with a spherical monofocal intraocular lens (IOL), and to see if the aberrations differ between eyes that received different types of IOLs. Methods One hundred forty-eight eyes of 148 patients who underwent phacoemulsification and implantation of one of five types of acrylic IOL were enrolled. At 1 month after surgery, ocular aberrations were measured using a Hartmann-Shack aberrometer and corneal aberrations were measured using videokeratography. In addition, the aberration of internal optics was determined by subtracting the corneal aberration from the ocular aberration. These aberrations were correlated with visual acuity and with contrast visual acuity under both photopic and mesopic conditions. Results Ocular, corneal, and internal optic aberrations (total aberration, coma, and spherical aberration) were all correlated significantly with visual acuity, as well as with photopic and mesopic contrast visual acuity. The associations between internal optic aberrations and visual function tended to be stronger than were those of corneal aberrations. Furthermore, ocular aberrations differed significantly between eyes with the five different IOLs (Pp0.0078). Specifically, the internal optic spherical aberration was markedly significantly different between eyes (P ¼ 0.0142), and the corneal coma showed a marginally significant difference (P ¼ 0.0421). Conclusion Ocular, corneal, and internal optic higher-order wavefront aberrations are correlated significantly with visual function in eyes with a spherical monofocal IOL. The spherical aberration of the internal optics and coma of the cornea vary between eyes with different types of IOL.

show abstract

Section: Introductionmentioning

confidence: 99%

Correlation of higher-order wavefront aberrations with visual function in pseudophakic eyes

Hayashi

Yoshida

Hayashi

2007

Eye

View full text Add to dashboard Cite

show abstract

“…As the eye ages, aberrations and scattering are increased (Ijspeert et al, 1990;Siik et al, 1992;Whitaker et al, 1993;van den Berg, 1995;Hennelly et al, 1998;Guirao et al, 1999;Calver et al, 1999;Kuroda et al, 2002;Fujikado et al, 2004), thus resulting in LSF broadening. In this study, since primarily the central region of the double-pass LSF was examined, aberrations and diffraction likely had a dominant role in determining the LSF shape.…”

Section: Discussionmentioning

confidence: 99%

Representing the retinal line spread shape with mathematical functions

Yang

Wanek

Shahidi

2008

J. Zhejiang Univ. Sci. B

View full text Add to dashboard Cite

Abstract:Objective: To report a mathematical function that characterizes the double-pass line spread function (LSF) of the human eye. Determining analytical functions that represent the double-pass LSF is important because it allows modeling the optical performance of the eye. Methods: Optical section retinal images, generated in normal human eyes using a modified slit-lamp biomicroscope, were analyzed to derive the double-pass LSF by plotting the intensity distribution of laser light reflected/ scattered from the vitreoretinal interface. Three mathematical functions (Lorentzian, Gaussian, exponential) were fitted to the double-pass LSF and the root mean square error (RMSE) was calculated to provide a measure of the goodness of fit. Results: The Lorentzian function provided the best representation of the double-pass LSF of normal human eyes. The full width at half maximum (FWHM) of the Lorentzian fitted curve was positively correlated with age, indicating that the double-pass LSF broadens with age. Furthermore, the goodness of fit of the Lorentzian function was significantly better in younger subjects as compared with older subjects, suggesting that the fitted function to the double-pass LSF may vary according to age. Conclusion: The results demonstrate an age-related change in the double-pass LSF width and the goodness of fit of the Lorentzian function.

show abstract

“…Es ist bekannt, dass die Aberrationen des menschlichen Auges mit zunehmendem Alter signifikant ansteigen und sich dadurch die Abbildungsqualität des Auges verschlechtert (Calver et al 1999, McLellan et al 2001, Marcos 2002, Amano et al 2004. Diese altersabhängige Zunahme der Aberrationen ist vor allem bei größeren Pupillendurchmessern gut zu beobachten (Oshika et al 1999 (Klyce et al 2004).…”

Section: Alter Der Probandenunclassified

“…Die Einteilung der Pupillendurchmesser von 4 und 6 mm wird häufig verwendet (Calver et al 1999, Ninomiya et al 2002, Amano et al 2004, Artal et al 2004, Montés-Micó et al 2004a). Die Pupillendurchmesser von 2, 4 und 6 mm wurden beispielsweise auch von …”

Section: Pupillendurchmesserunclassified