Apparent accommodation in pseudophakic eyes with refractive against-the-rule, with-the-rule and minimum astigmatism

Yamamoto, Toshiya; Hiraoka, Takahiro; Oshika, Tetsuro

doi:10.1136/bjophthalmol-2015-307032

Cited by 12 publications

(7 citation statements)

References 23 publications

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“…Previous studies reported that corneal aberrations and multifocality are associated with good near vision. [ 28 30 ] However, we could only measure the amount of corneal astigmatism, which was not significantly associated with good near vision in our study.…”

Section: Discussionmentioning

confidence: 80%

Factors associated with good near vision after cataract surgery with monofocal intraocular lens implantation at a tertiary eye hospital in southern India

Kaup

Charugundla

Shivalli

2022

Saudi Journal of Ophthalmology

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PURPOSE: Although multifocal intraocular lenses (IOLs) are effective methods of dealing with surgical presbyopia, there are associated limitations (cost, technique, and patient-reported symptoms). Given their scalability challenge (due to economic factors), it is imperative to explore alternative low-cost and sustainable solutions to achieve good near vision postcataract surgery. This study aimed to determine the proportion of and the factors associated with good near vision in patients following cataract surgery with monofocal IOL implantation. METHODS: We conducted a hospital-based cross-sectional study at a tertiary eye hospital in southern India from September 2019 to January 2020. Inclusion criteria: Uncomplicated postcataract surgery cases with monofocal IOL at least 30 days ago. Exclusion criteria: patients with any ocular condition (other than refractive errors) that could decrease the vision with best-corrected distance visual acuity < 0.18 Logarithm of the Minimum Angle of Resolution (LogMAR) units. Data collection: we assessed near vision (at 40 cm distance by using near vision card with Early Treatment of Diabetic Retinopathy Study format), distance visual acuity (uncorrected and best-corrected), refractive error (amount and type), type of astigmatism, pupil size, axial length, and contrast sensitivity. We considered a near vision of 0.2 LogMAR units or better as good near vision. RESULTS: Of the 82 patients (82 eyes), 71 (86.59%) had good near vision. Multiple logistic regression analysis found found that the presence of myopia or myopic astigmatism was significantly associated with good near vision (adjusted odds ratio: 72.63; 95% confidence interval: 1.02–5193.5, p = 0.049). CONCLUSION: About eight of every ten participants had good near vision postcataract surgery with monofocal IOL implantation. Myopia/myopic astigmatism was associated with good near vision.

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Section: Discussionmentioning

confidence: 80%

Factors associated with good near vision after cataract surgery with monofocal intraocular lens implantation at a tertiary eye hospital in southern India

Kaup

Charugundla

Shivalli

2022

Saudi Journal of Ophthalmology

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“…The variation seen in UNVA after monofocal IOL implantion has been constantly observed; it is possible that this variation is associated with the pinhole effect created by a small pupil [ 8 ] or the pseudoaccommodative effect resulting from increased corneal SA [ 9 – 12 ] and coma aberrations [ 13 – 16 ]. We found that the UNVA in emmetropic Vivity-implanted eyes is mostly affected by the pupil size.…”

Section: Discussionmentioning

confidence: 99%

Analysis of uncorrected near visual acuity after extended depth-of-focus AcrySof® Vivity™ intraocular lens implantation

Choi¹,

Kwon²

2022

PLoS ONE

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A newly developed extended-depth-of-focus AcrySof® Vivity™ intraocular lens (IOL), which has a wavefront-shaped anterior surface, has shown a promising outcome in minimizing dysphotopsia, the biggest issue after diffractive type IOL implantation. On the contrary, relatively low uncorrected near visual acuity (UNVA) has been raised as a demerit of this IOL. However, there is only limited information about the UNVA after Vivity implantation. In the present study, we compared the uncorrected distant and intermediate visual acuity (UDVA and UIVA) and UNVA according to the range of refractive error (RE) from 91 eyes from 91 patients implanted with Vivity IOL. Then we assessed the biometric factors for their association with UNVA from 66 eyes with a RE within ± 0.25 D. The UDVA was worst in eyes with RE < -0.50 D (0.17 ± 0.21), which was significantly worse than in any other group (P < 0.001 for every analysis). The UIVA was worst in eyes with RE of 0.25 to 0.50 D (0.35 ± 0.07 D), which was significantly worse than in eyes with RE of -0.50 to -0.26 D (P = 0.020) and in eyes with RE of -0.25 to -0.01 D (P = 0.028). The UNVA was worst in eyes with RE of 0.25 to 0.50 D (0.40 ± 0.14 D), which was significantly worse than in eyes with RE of -0.50 to -0.26 D (P = 0.022), which suggests that the extent of monovision should be limited up to -0.50 diopter. On univariate analysis for UNVA in eyes with a RE within ± 0.25 D, the anterior chamber depth (R = 0.257; P = 0.037) and pupil size (R = 0.451; P < 0.001) had a statistically significant relation to UNVA, while multivariate analysis showed the pupil size (β = 0.451; P < 0.001) as the sole indicator, suggesting eyes with a small pupil size might receive a UNVA benefit.

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“…For short term employment of eyes in various lighting environments, adjusting ability of ciliary muscle presents different, resulting to different variations of lens shapes. In a human eye measurement, adjusting ability of ciliary muscle can be represented by the accommodation (ACC) [23]- [25], and the shape of crystalline lens could be effectively indicated by the high order aberrations (HOAs) [26], [27]. Consequently, fatigue perceptions of human eye are always related to the ocular physiological parameters of both ACC and HOAs.…”

Section: B Physiological Parametersmentioning

confidence: 99%

A Better Photometric Index of Photo-Biological Effect on Visual Function of Human Eye: Illuminance or Luminance?

et al. 2019

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The illuminance index has been widely used in the field of photometry, although the luminance contains more information on not only light intensity but also light direction. In this study, we clarify which photometric index is more competent to describe the influence of lighting environment on human eye. In this study, we propose a novel methodology to investigate the photo-biological effect of the lighting environment by human factor experiment. With the human factor experiments performed on 20 participants, we compare the variations of ocular responses during the Landolt-rings-counting visual task in lighting environments with similar illuminance while distinct luminance changes. With the same Correlated Color Temperature (CCT) and Spectral Power Distribution (SPD), optical performances with similar illuminance values present quite different influences on ocular responses, and the response variations are found to vary with luminance values. It is implied that the regularity of luminance influence on the ocular responses to lighting environment is likely to be dependent on luminance value instead of illuminance, and the photometric index luminance seems more appropriate to be used to assess the lighting quality in standards. INDEX TERMS Lighting environment, light direction, ocular response, luminance value, photometric index.

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Apparent accommodation in pseudophakic eyes with refractive against-the-rule, with-the-rule and minimum astigmatism

Abstract: There was no significant difference in the average amount of apparent accommodation in pseudophakic eyes with refractive ATR, WTR and minimum astigmatism. However, the factors relevant to apparent accommodation varied depending on the status of postoperative refractive astigmatism.

Cited by 12 publications

References 23 publications

Factors associated with good near vision after cataract surgery with monofocal intraocular lens implantation at a tertiary eye hospital in southern India

Factors associated with good near vision after cataract surgery with monofocal intraocular lens implantation at a tertiary eye hospital in southern India

Analysis of uncorrected near visual acuity after extended depth-of-focus AcrySof® Vivity™ intraocular lens implantation

A Better Photometric Index of Photo-Biological Effect on Visual Function of Human Eye: Illuminance or Luminance?

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