The influence of size and shape of Nd:YAG capsulotomy on visual acuity and refraction

Çetinkaya, Servet; Cetinkaya, Yasemin Fatma; Yener, Halil İbrahim; Dadacı, Zeynep; Özçimen, Muammer; Acır, Nurşen Öncel

doi:10.5935/0004-2749.20150057

Cited by 10 publications

(7 citation statements)

References 19 publications

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“…The SE became more hyperopic significantly in the early Nd:YAG group compared with that in the late Nd:YAG group in the current study. In previous studies, the SE showed similar value after Nd:YAG laser capsulotomy whether in monofocal or multifocal IOL [21,24], and no related factors for the hyperopic or myopic change of SE were found except for the IOL design [19,20,25]. However, those studies did not consider the effect of Nd:YAG laser capsulotomy at different time periods, which may be a critical factor for the refraction since IOL stability is not consistent after the cataract surgery [22].…”

Section: Discussionmentioning

confidence: 93%

“…However, most of previous studies failed to show significant change in refraction before and after Nd:YAG laser capsulotomy [15][16][17], except one study showed a hyperopic shift after Nd:YAG laser capsulotomy [18]. Moreover, the size and shape of Nd:YAG laser capsulotomy, the energy used in Nd:YAG laser capsulotomy, and the designs of IOL did not affect the post-laser refractive status according to previous research [19][20][21]. Still, it remains unclear whether the timing of laser capsulotomy plays a pivotal role in the refractive and visual prognosis of patients after Nd:YAG laser capsulotomy.…”

Section: Introductionmentioning

confidence: 80%

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Refractive Changes Following Premature Posterior Capsulotomy Using Neodymium:Yttrium–Aluminum–Garnet Laser

Lee

Meir

et al. 2022

JPM

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We aimed to determine the timing of neodymium:yttrium–aluminum–garnet (Nd:YAG) laser capsulotomy on corrected-distance visual acuity (CDVA), intraocular pressure (IOP), and spherical equivalent (SE) in patients with posterior capsular opacification (PCO). There were 59 patients with unilateral PCO and a history of Nd:YAG laser capsulotomy enrolled and further divided into the early Nd:YAG group (timing < 12 months, n = 25) and late Nd:YAG group (timing > 12 months, n = 34) depending on the elapsed months from phacoemulsification to Nd:YAG laser capsulotomy. The primary outcomes were CDVA, IOP, and SE before (immediately before Nd:YAG laser capsulotomy) and after (weeks one and four after the laser treatment). The independent t test was applied to analyze the difference in CDVA, IOP, and SE between the two groups, while the generalized estimating equation with Bonferroni adjustment was conducted to evaluate the effect of all the parameters on the change in SE with adjusted odds ratio (aOR) and 95% confidence interval (CI). The CDVA showed significant improvement in both the early Nd:YAG group (p = 0.005) and the late Nd:YAG group (p = 0.001), and hyperopic change occurred in both the early Nd:YAG group (p = 0.003) and the late Nd:YAG group (p = 0.017). The early Nd:YAG group revealed more significant hyperopic change compared with the late Nd:YAG group four weeks after Nd:YAG treatment (p < 0.001), which was still significant after multivariable analysis (aOR: 0.899, 95% CI: 0.868–0.930, p = 0.011). In addition, a deeper ACD (aOR: 0.764, 95% CI: 0.671–0.869, p = 0.019) was significantly correlated with hyperopic change. In conclusion, Nd:YAG laser capsulotomy performed within one year after cataract surgery may lead to significant hyperopic change, in which the ACD alteration affects the hyperopic shift significantly.

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Section: Discussionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 80%

Refractive Changes Following Premature Posterior Capsulotomy Using Neodymium:Yttrium–Aluminum–Garnet Laser

Lee

Meir

et al. 2022

JPM

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“…Nd:YAG laser capsulotomy size can affect visual function [15]. Holladay et al [16] found that a smaller capsulotomy opening increases light scattering.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Capsulotomy Shape on Intraocular Light-Scattering after Nd:YAG Laser Capsulotomy

Song

2020

Journal of Ophthalmology

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Purpose. To investigate the effects of capsulotomy shape on the visual acuity and visual quality after neodymium: yttrium aluminum garnet laser capsulotomy. Methods. In this study, a total of 42 eyes from 35 patients with posterior capsule opacification were divided into the circular and cruciate groups. The corrected distance visual acuity (CDVA), objective scatter index (OSI), modulation transfer function cutoff (MTF cutoff), Strehl ratio, and Optical Quality Analysis System values at contrasts of 100%, 20%, and 9% (OV-100, OV-20, and OV-9) were measured at precapsulotomy and 1 week and 1 month postcapsulotomy. The pseudophakic dysphotopsia questionnaire (PDQ) was used to evaluate the subjects’ satisfaction with treatment. Results. OSI values were significantly higher in the cruciate group than in the circular group at 1 week and 1 month after capsulotomy (P=0.013 and P<0.001). No significant difference was found in the OSI values between the two groups before capsulotomy (t = 0.52; P=0.61). The decrease in OSI was higher in the circular group than in the cruciate group at 1 week and 1 month after capsulotomy (P=0.036 and P=0.019). No significant differences were found in the Strehl ratio, MTF cutoff, CDVA, OV-100, OV-20, and OV-9 between the two groups at 1 week and 1 month after capsulotomy (P>0.05). The PDQ results showed that patients with circular-shaped capsulotomy complained less with intolerance of bright lights than those with cruciate-shaped capsulotomy. Conclusions. Circular-shaped capsulotomy can induce less intraocular light scattering and increase patient satisfaction.

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“…Performing a posterior capsulotomy is indicated when visual acuity is reduced, affecting the performance of everyday activities or when it is impossible to explore the posterior pole structures like the retina or the optic nerve 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Secondary ocular hypertension as a complication of posterior capsulotomy with Nd YAG laser in glaucoma suspect

Ramón-Concepción¹,

Chávez-Gutiérrez²,

Chávez-Gutiérrez³

et al. 2019

RMOE

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Posterior capsulotomy is indicated when the visual acuity is committed so that impacts the performance of ordinary activities or exploring the posterior pole structures as in the evaluation of the retina or optic nerve is difficult. As expected is not free of complications. There are reports of intraocular lens (IOL) pitting, elevation of intraocular pressure (IOP), cystoid macular edema, retinal detachment, endophthalmitis, iritis, vitritis, corneal edema and macular holes. Multidisciplinary immediate management of complications of posterior capsulotomy Nd-YAG laser prevents loss of corneal clarity and diminishes or prevents optic neuropathy secondary to increased IOP. We report the case of 70-year-oldwoman who presents 48 h after performing posterior capsulotomy with Nd-YAG laser with ocular pain and IOP of 34 mmHg. The inicial management included topical and oral ocular hypotensive and inflammatory therapy achieving normal eye pressure. During slit lamp biomicroscopy we found microguttae in corneal endothelium, vitreous in the anterior chamber, IOL dislocation, retinal pigment epithelial detachment (RPED), subretinal fluid and corneal edema. A vitrectomy was performed. We decided conservative treatment of the IOL, close monitoring and treatment of IOP and specular microscopy as part of a comprehensive treatment. Finally, subretinal fluid reabsorption is achieved although RPED remains with no changes, we achieve resolution of corneal and IOP is 12 mmHg without ocular antihypertensives. The final visual acuity is 20/40−2.

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The influence of size and shape of Nd:YAG capsulotomy on visual acuity and refraction

Abstract: Purpose: To evaluate the influence of size and shape of neodymium:yttrium aluminum-Garnet (Nd:YAG) laser capsulotomy on visual acuity and refraction.

Cited by 10 publications

References 19 publications

Refractive Changes Following Premature Posterior Capsulotomy Using Neodymium:Yttrium–Aluminum–Garnet Laser

Refractive Changes Following Premature Posterior Capsulotomy Using Neodymium:Yttrium–Aluminum–Garnet Laser

The Effect of Capsulotomy Shape on Intraocular Light-Scattering after Nd:YAG Laser Capsulotomy

Secondary ocular hypertension as a complication of posterior capsulotomy with Nd YAG laser in glaucoma suspect

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