Monochromatic Aberrations as a Function of Age, from Childhood to Advanced Age

Brunette, Isabelle; Bueno, Juan M.; Parent, M.; Hamam, Habib; Simonet, Pierre

doi:10.1167/iovs.02-1042

Cited by 126 publications

(96 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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. The results of the current study indicate broadening of the Lorentzian fitted curve with age, corresponding to previous studies that have reported increased aberrations due to aging in normal subjects (Hammond et al, 2000;Artal et al, 2002;Brunette et al, 2003;Amano et al, 2004). Also, the width of the LSF depends on pupil size and has been reported to vary by 1.8 arc min for pupil diameters in the range of 4.9~6.6 mm (Campbell and Gubisch, 1966).…”

Section: Discussionsupporting

confidence: 87%

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

Section: Discussionsupporting

confidence: 87%

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

show abstract

“…[1][2][3] Thus far, numerous fundamental studies on ocular wavefront aberrations have been carried out, and some of them have elucidated that HOAs increase with age. [4][5][6] However, most studies have been conducted in adults and the information on HOAs in a pediatric population is still very limited. [6][7][8][9] The influence of accommodation on HOAs has also been investigated, 2,[10][11][12][13][14] and previous studies have shown that HOAs change with increasing levels of accommodation.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6] However, most studies have been conducted in adults and the information on HOAs in a pediatric population is still very limited. [6][7][8][9] The influence of accommodation on HOAs has also been investigated, 2,[10][11][12][13][14] and previous studies have shown that HOAs change with increasing levels of accommodation. 10,12 However, very few attempts have been made to clarify the influence of cycloplegia on HOAs.…”

Section: Introductionmentioning

confidence: 99%

Influence of cycloplegia with topical cyclopentolate on higher-order aberrations in myopic children

Hiraoka

Nakamura

Ogata

et al. 2014

Eye

View full text Add to dashboard Cite

Purpose To investigate the influence of cycloplegia with topical cyclopentolate on wavefront aberrations in myopic children. Design This is a prospective, comparative study. Methods Twenty-eight myopic children with a mean age of 7.25±2.55 were enrolled in this study. We evaluated refraction and wavefront aberrations before and after cycloplegia with 1% cyclopentolate hydrochloride. Ocular and corneal aberrations were simultaneously measured and compared with each other. Individual Zernike components were also analyzed up to the sixth order. All these parameters were compared before and after cycloplegia. Results Ocular higher-order aberrations (HOAs) significantly increased after cycloplegia (P ¼ 0.012 for spherical-like and P ¼ 0.015 for total HOAs). Corneal HOAs did not change after cycloplegia. When corneal and ocular HOAs were compared, the ocular HOAs were significantly smaller than the corneal HOAs in spherical-like aberrations (Po0.001) and total HOAs (P ¼ 0.006). As for individual Zernike components, ocular aberration generally showed smaller or equivalent values in comparison with corneal aberration. In addition, each Zernike component showed a large standard deviation. Conclusions Internal optics compensates for corneal HOAs in myopic children, and paralysis of tonic accommodation with cyclopentolate considerably affects ocular HOAs. However, inter-individual variation in each Zernike component is quite large in myopic children.

show abstract

“…As a result, and in white light illumination, the naked eye with natural physiological pupil sizes is far from being diffraction limited. In addition, many experimental evidences 88,[98][99][100] suggest an approximately monotonic decline of optical quality with aging. Different authors judged quite differently the…”

Section: Discussionmentioning

confidence: 99%

The Optical Design of the Human Eye: a Critical Review

Navarro

2009

Journal of Optometry

100

View full text Add to dashboard Cite

Cornea, lens and eye models are analyzed and compared to experimental findings to assess properties and eventually unveil optical design principles involved in the structure and function of the optical system of the eye. Models and data often show good match but also some paradoxes. The optical design seems to correspond to a wide angle lens. Compared to conventional optical systems, the eye presents a poor optical quality on axis, but a relatively good quality off-axis, thus yielding higher homogeneity for a wide visual field. This seems the result of an intriguing combination of the symmetry design principle with a total lack of rotational symmetry, decentrations and misalignments of the optical surfaces (J Optom 2009;2:3-18 ©2009 Spanish Council of Optometry) KEY WORDS: human eye's optical design; eye models; design principles; ocular aberrations; optical quality of the eye. RESUMENEn este trabajo, los modelos de córnea, de cristalino y de ojo se analizan y se comparan con los datos experimentales para evaluar las propiedades y, eventualmente, para desvelar los principios del diseño óptico que afectan a la estructura y al funcionamiento del sistema óptico del ojo humano. A menudo encontramos una coincidencia razonable entre los modelos y los datos experimentales, pero también se ponen de manifiesto algunas paradojas. El diseño óptico parece corresponderse con el de un gran angular. En comparación con los sistemas ópticos convencionales, el ojo tiene una mala calidad óptica en eje pero, por el contrario, presenta una calidad relativamente buena fuera de eje, proporcionando así una gran homogeneidad a una amplia extensión del campo visual. Este hecho parece ser el resultado de una curiosa combinación del principio de diseño simétrico con una total ausencia de simetría de rotación, con descentramientos y con una deficiente alineación de las superficies ópticas. (J Optom 2009;2:3-18 ©2009 Consejo General de Colegios de Ópticos-Optometristas de España) PALABRAS CLAVE: diseño óptico del ojo humano; modelos de ojo; principios de diseño; aberraciones oculares; calidad óptica del ojo.

show abstract

Monochromatic Aberrations as a Function of Age, from Childhood to Advanced Age

Cited by 126 publications

References 42 publications

Representing the retinal line spread shape with mathematical functions

Representing the retinal line spread shape with mathematical functions

Influence of cycloplegia with topical cyclopentolate on higher-order aberrations in myopic children

The Optical Design of the Human Eye: a Critical Review

Contact Info

Product

Resources

About