Relationship between apparent accommodation and corneal multifocality in pseudophakic eyes

Fukuyama, Makoto; Oshika, Tetsuro; Amano, Shiro; Yoshitomi, Fumiaki

doi:10.1016/s0161-6420(99)90259-2

Cited by 90 publications

(61 citation statements)

References 16 publications

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“…So it depends on patient cooperation and understanding. Subjective methods were found to be more reliable for measuring apparent accommodation according to Langenbucher et al 16 Many previous researches confirmed that the amplitude of apparent accommodation is correlated with different factors including; depth of focus 17,18 , pupil diameter 4,19 , degree of corneal astigmatism 20 , corneal multifocality and aberrations 21,22 , and IOL axial forward movement. 23,24 Depth of focus is an intrinsic characteristic of all optical systems that was considered to be one of the most significant factors of apparent accommodation.…”

Section: Discussionmentioning

confidence: 99%

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

Al-Wesabi¹,

Yang²,

Li³

et al. 2016

IOSR

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Abstract:Background: To assess the refractive status of cataract patients with extreme myopia and to measure their accommodative capability after monofocal IOL implantation. Design: Prospective non-randomized study conducted at Tianjin Medical University Eye Centre.Participants: 18 patients with 34 extreme myopic eyes ≥27mm axial length), and 14 patients with 27 non-myopic eyes that had uneventful phacoemulsification and monofocal IOL implantation. Methods:The accommodation amplitude of the two groups was compared pre-and post-operatively using subjective minus-lenses-to-blur method. In the extreme myopic group, the postoperative target refraction was selected to be myopic, and they were evaluated for predicted postoperative spherical power consistency.

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Section: Discussionmentioning

confidence: 99%

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

Al-Wesabi¹,

Yang²,

Li³

et al. 2016

IOSR

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“…It is associated with pupil size (9) , myopic astigmatism (10) , longitudinal movement of the IOL (11) , and corneal multifocality (12) . Nevertheless, this technique revealed a marked acceptance in our studied group with higher rate of satisfaction and its result is consistent with other studies, including the same mean SE reported by some authors (13) who also demonstrated that the SE of -2.0 D provided intermediate and near vision in most cases.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of visual performance and patient satisfaction with pseudophakic monovision technique

Marques¹,

Sato²,

Chiacchio³

et al. 2009

Arq. Bras. Oftalmol.

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“…28,29 We measured the OS by applying the pharmacological method in which we calculated the difference in the ACD. 3,10,11,24,[30][31][32][33][34][35] Although this is an indirect method, it is well-accepted as it does not rely on patient compliance during the measurement procedure. 3 Even though these pharmacological stimuli are nonphysiological, they are reported to be useful to find out the maximum potential of the optic shift.…”

Section: Discussionmentioning

confidence: 99%

Anterior capsule cover and axial movement of intraocular lens

Nanavaty

Raj

Vasavada

et al. 2007

Eye

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Purpose To measure optic shift (OS) of a single piece monofocal intraocular lens (IOL) with varying relationships between anterior capsule cover and IOL optic. Methods This is a prospective randomized masked study of 150 eyes undergoing phacoemulsification. Eyes received either option: 360 o total capsule cover (group I); partial cover (group II); or no cover (group III). OS was calculated as difference in anterior chamber depth after administration of cyclopentolate 1% and pilocarpine 2% on IOLMaster s at separate visits at 6 months follow-up. Subsequently, using retro-illumination photographs, percentage area of capsule cover was calculated. OS within and between groups I and II was analyzed. The impact of one quartile change in area of capsule cover on percentage change in OS was measured for both groups. Unpaired t-test, correlation, and regression were applied. Results In groups I, II, and III, mean age of patients was 56.6876.38, 57.0977.34, 59.1576.35 years, respectively; mean OS (mm) was 1.2570.28, 1.2070.24; 0.9570.26 (P ¼ 0.013), respectively; and percentage area of capsule cover (%) was 47.35710.48, 33.83710.11, 0.1670.13 (P ¼ 0.001), respectively. Mean percentage area of capsule cover in group I vs group II was significant (P ¼ 0.001). OS was 1.2270.26 mm in groups I and II (combined) vs 0.9570.26 mm in group III (P ¼ 0.004, (0.06, 0.33)). OS in group I vs group II was not significant (P ¼ 0.46). Correlation coefficient was r ¼ 0.38 (Po0.001). With every increment on quartile (a quartile is any of the three values which divide the sorted data set into four equal parts, so that each part represents one-fourth of the sample or population) class of area of capsule cover the OS increased by 0.12 mm. ConclusionThe OS differed significantly between total and partial cover groups combined vs no cover group.

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Relationship between apparent accommodation and corneal multifocality in pseudophakic eyes

Cited by 90 publications

References 16 publications

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

The Analysis of Refraction and Accommodation of Extreme Myopia with Cataract after Phacoemulsification and IOL Implantation

Evaluation of visual performance and patient satisfaction with pseudophakic monovision technique

Anterior capsule cover and axial movement of intraocular lens

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