Apparent accommodation in pseudophakic eyes

Ravalico, Giuseppe; Baccara, Fabio

doi:10.1111/j.1755-3768.1990.tb04797.x

Cited by 32 publications

(5 citation statements)

References 6 publications

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“…8,9 However, it has been shown that patients with monofocal IOLs have a certain range of apparent accommodation. [10][11][12][13] Accordingly, it would be better to fully use the region of apparent accommodation.…”

Section: Discussionmentioning

confidence: 98%

“…Accordingly, it is now advantageous, or almost essential, that both near and intermediate distance tasks be performed; this capability can be met by using the region of apparent accommodation. [10][11][12][13] Studies show that slight myopia accompanied by a certain degree of astigmatism enhances the depth of focus in eyes with a monofocal IOL. [14][15][16][17] It is difficult, however, to produce the optimum degree of astigmatism after cataract surgery, whereas small-incision cataract surgery affects astigmatism only slightly.…”

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confidence: 98%

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Optimum target refraction for highly and moderately myopic patients after monofocal intraocular lens implantation

Hayashi

2007

Journal of Cataract and Refractive Surgery

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Section: Discussionmentioning

confidence: 98%

mentioning

confidence: 98%

Optimum target refraction for highly and moderately myopic patients after monofocal intraocular lens implantation

Hayashi

2007

Journal of Cataract and Refractive Surgery

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“…21,22 Increased levels of pseudoaccommodation may be used to increase the depth of focus and accommodative amplitude in the presbyopic population. The most frequent factors that positively influence pseudoaccommodation include corneal and IOL wavefront aberration, astigmatism, [23][24][25][26][27] and small pupil size. 25 Based on the understanding of inherent pseudoaccommodation, these pseudoaccommodative mechanisms are employed in different types of the EDOF lenses.…”

Section: Introductionmentioning

confidence: 99%

Latest Development in Extended Depth-of-Focus Intraocular Lenses: An Update

Megiddo-Barnir

Alió

2023

Asia-Pacific Journal of Ophthalmology

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In recent years, there has been an overwhelming influx of different types of intraocular lenses (IOLs) as treatment for presbyopia. The extended depth-of-focus (EDOF) technology creates a single elongated focal point to enhance depth of focus, in contrast to the multiple foci of multifocal (MF) lenses. In this way, the EDOF lenses aim to reduce photic phenomena, glare, and halos, which have been reported in MF IOLs. A potential disadvantage of this is a blur due to decreased retinal image quality when the amount of the aberrations is increased excessively. Multifocality and EDOF characteristics are not exclusive of each other. Frequently, EDOF IOLs are combined with MF optical designs, a bifocal IOL may exhibit EDOF characteristics, likewise an aspheric monofocal IOL or a diffractive or refractive trifocal IOL. Thus, EDOF lenses are commonly subjected to confusion. A wide range of different types of EDOF lenses are available on the market to surgeons. In this practical update, we aim to clarify what is a true EDOF lens, classify the different types of the EDOF lenses based on their optical principle and review their recently reported outcomes. Comprehensive patient examination and selection, combined with knowledge of the most updated options and adequate patient counseling, can avoid dissatisfaction and yield the desired outcomes.

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“…22,23 Anatomic changes during accommodation, particularly of the anterior segment, have been successfully demonstrated by US imaging in presbyopic eyes as well as after cataract surgery. [24][25][26] The effects of ciliary muscle contraction in pseudophakic eyes have also been reported. 24,27 In 2000, Lesiewska-Junk and Ka1un _ zny 28 reported anterior IOL shift caused by accommodative stimuli in young pseudophakic eyes.…”

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confidence: 95%