Wavefront aberration changes caused by a gradient of increasing accommodation stimuli

Zhou, Xiao‐Yang; Wang, L; Xt, Zhou; Zhou, Yu

doi:10.1038/eye.2014.244

Cited by 32 publications

(53 citation statements)

References 28 publications

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“…For a fixed pupil diameter, HOA RMS consistently increases with greater accommodation demands, although some have found this occurs only with demands above 3 D . The major consistent change in HOAs that occurs during accommodation is a decrease in primary spherical aberration (

Z_{4}^{0}

), becoming less positive or more negative .…”

Section: Hoas During Near Work and Accommodationmentioning

confidence: 97%

“…For a fixed pupil diameter, HOA RMS consistently increases with greater accommodation demands, 124,125 although some have found this occurs only with demands above 3 D. [126][127][128][129] The major consistent change in HOAs that occurs during accommodation is a decrease in primary spherical aberration (Z 0 4 ), becoming less positive or more negative. [124][125][126][129][130][131][132] Secondary spherical aberration (Z 0 6 ) also undergoes a relatively small change, 124,132 but is less consistent with respect to the direction of change.…”

Section: Hoas During Near Work and Accommodationmentioning

confidence: 99%

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Higher order aberrations, refractive error development and myopia control: a review

Hughes

Vincent

Read

et al. 2020

Clinical and Experimental Optometry

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Evidence from animal and human studies suggests that ocular growth is influenced by visual experience. Reduced retinal image quality and imposed optical defocus result in predictable changes in axial eye growth. Higher order aberrations are optical imperfections of the eye that alter retinal image quality despite optimal correction of spherical defocus and astigmatism. Since higher order aberrations reduce retinal image quality and produce variations in optical vergence across the entrance pupil of the eye, they may provide optical signals that contribute to the regulation and modulation of eye growth and refractive error development. The magnitude and type of higher order aberrations vary with age, refractive error, and during near work and accommodation. Furthermore, distinctive changes in higher order aberrations occur with various myopia control treatments, including atropine, near addition spectacle lenses, orthokeratology and soft multifocal and dual‐focus contact lenses. Several plausible mechanisms have been proposed by which higher order aberrations may influence axial eye growth, the development of refractive error, and the treatment effect of myopia control interventions. Future studies of higher order aberrations, particularly during childhood, accommodation, and treatment with myopia control interventions are required to further our understanding of their potential role in refractive error development and eye growth.

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Z_{4}^{0}

), becoming less positive or more negative .…”

Section: Hoas During Near Work and Accommodationmentioning

confidence: 97%

Section: Hoas During Near Work and Accommodationmentioning

confidence: 99%

Higher order aberrations, refractive error development and myopia control: a review

Hughes

Vincent

Read

et al. 2020

Clinical and Experimental Optometry

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“…According to Gabriel et al and Zhou et al, aberrations of higher order change with an increase in the accommodation strain [10,11]. During accommodation, a decrease in coma-like aberrations -Z (3) (−1), Z (3) (1) -was found; spherical aberration -Z (4) (0) -changes the sign from positive to negative [12].…”

Section: Introductionmentioning

confidence: 99%

Correlation analysis of wavefront aberrations and accommodations in myopia and hyperopia

Тарутта

Harutyunyan

Khandzhyan

et al. 2018

Pomeranian J Life Sci

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Introduction: This paper presents a comparative study of accommodation, pseudoaccommodation (PA) and higher order optical aberrations (HOAs) in children and young people with myopia and hyperopia. Materials and methods: 123 myopic eyes (mean −5.27 ±1.6 D) and 53 hyperopic eyes (mean +3.1 ±1.15 D) of 88 patients aged 5-24 (mean age 12.5 ±0.7) were examined. The parameters measured included objective accommodative response, and relative accommodation reserves. Pseudoaccomodation amplitude (PA) was determined as the difference between the calculated additional plus lens 3.0 D and the power of the minimum plus lens which allowed reading in cycloplegic conditions (1% cyclopentolate hydrochloride x 2) at a distance of 33 cm. Higher order aberrations (root mean square -RMS), vertical and horizontal trefoil, vertical and horizontal coma (coma7, coma8), and spherical aberration (SA) were also measured. Results: Objective and subjective accommodation parameters were significantly lower in myopia as compared to hyperopia, while wavefront aberrations (RMS HOA, vertical trefoil, coma7) and PA were significantly higher. Aberration and accommodation parameters were found to be differently related in myopia and hyperopia. In myopia, RMS and vertical coma were directly correlated with accommodation, while vertical trefoil and SA were directly correlated with PA. In hyperopia, vertical trefoil was directly correlated to accommodation and PA, while vertical coma was negatively correlated with PA, and horizontal trefoil and SA were negatively correlated with accommodation. Spherical aberration measured under cycloplegia correlated differently with accommodation in myopic and hyperopic patients. In myopia, no correlation with the objective accommodation response was found, while direct correlation with the PA value could be detected. Conversely, in hyperopia, a negative correlation with objective accommodation response and no correlation with PА was detected. A significantly higher value of SA in myopic patients with a broader amplitude of PA was observed. In hyperopic eyes, in contrast to myopic ones, SA was significantly decreasing, moving to negative values in high amplitude PA. Conclusions: Parameters of accommodation were decreased and HOAs, PA were increased in myopia. Accommodation and wavefront parameters exhibit different relationships with each other in myopic and hyperopic eyes. The detected features should be taken into consideration when developing correction methods which are targeted toward refractogenesis. Keywords: wavefront; aberrations; accommodation; accommodative response; pseudoaccommodation; myopia; hyperopia. ABSTRAKT Wstęp:Celem badania było przeprowadzenie analizy porów-nawczej dotyczącej akomodacji, pseudoakomodacji (PA) i aberracji wyższego rzędu (higher order optical aberrations -HOA) u dzieci oraz młodzieży z krótkowzrocznością i nadwzrocznością. Materiały i metody: W badaniu wzięło udział 88 pacjentów w wieku 5-24 lat (średnia 12,5 ±0,7). Zbadano 123 oczu z krótko-wzrocznością (średnia −5,27 ...

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“…Выявлена взаимосвязь аберраций и аккомодации: по ряду данных, более высокий уровень суммарных аберраций, изменение структуры волнового фронта могут снижать аккомодационный ответ и, напротив, в процессе аккомодации существенно изменяются параметры аберраций [9][10][11][12][13].…”

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Wavefront and accommodation parameters under different conditions of correction in myopia and hyperopia

et al. 2018

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Wavefront aberration changes caused by a gradient of increasing accommodation stimuli

Cited by 32 publications

References 28 publications

Higher order aberrations, refractive error development and myopia control: a review

Higher order aberrations, refractive error development and myopia control: a review

Correlation analysis of wavefront aberrations and accommodations in myopia and hyperopia

Wavefront and accommodation parameters under different conditions of correction in myopia and hyperopia

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