Comparison of Implantable Collamer Lens Visian ICL V4 and ICL V4c for high myopia

There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

Abstract

The aim of this study was to investigate the visual quality of the 2 kinds of intraocular lens: Visian implantable collamer lens (ICL) V4 and Visian ICL V4c implantations for high myopia.

Twenty cases (20 eyes) with high myopia who received Visian ICL V4 implantation and 18 cases (18 eyes) with high myopia who received Visian ICL V4c implantation in our hospital from April 1, 2014 to November 31, 2016 were enrolled. In 1-month follow-up, near vision, best corrected distant visual acuity (BCVA), uncorrected distant visual acuity (UDVA), and wavefront aberrations were measured, and compensation factor was calculated.

Near vision, UDVA, and BCVA showed no significant difference between ICL V4 implantation and ICL V4c implantation ( P >.05). However, high-order aberrations and spherical aberrations were higher in ICL V4c implantation than in ICL V4 implantation ( P <.05). Low-order aberrations (defocus and astigmatism), coma, and subjective visual quality had no significant difference between ICL V4 implantation and ICL V4c implantation ( P >.05).

The 2 kinds of ICL Visian ICL V4 and Visian ICL V4c had similar efficacy of visual quality for high myopia. The presence of the central hole of Visian ICL V4c has no significant effect on visual quality.

Related collections

Most cited references 25

Record: found
Abstract: found
Article: not found

Refractive error and visual impairment in urban children in southern china.

L B Ellwein, Jingjing Xu, Junwen Zeng … (2004)

To assess the prevalence of refractive error and visual impairment in school-age children in a metropolitan area of southern China. Random selection of geographically defined clusters was used to identify children 5 to 15 years of age in Guangzhou. Children in 22 clusters were enumerated through a door-to-door survey and examined in 71 schools and 19 community facilities from October 2002 to January 2003. The examination included visual acuity measurements, ocular motility evaluation, retinoscopy, and autorefraction under cycloplegia and examination of the external eye, anterior segment, media, and fundus. A total of 5053 children living in 4814 households were enumerated, and 4364 (86.4%) were examined. The prevalence of uncorrected, presenting, and best-corrected visual acuity 20/40 or worse in the better eye was 22.3%, 10.3%, and 0.62%, respectively. Refractive error was the cause in 94.9% of the 2335 eyes with reduced vision, amblyopia in 1.9%, other causes in 0.4%, and unexplained causes in the remaining 2.8%. External and anterior segment abnormalities were seen in 1496 (34.3%) children, mainly minor conjunctival abnormalities. Media and fundus abnormalities were observed in 32 (0.73%) children. Myopia (spherical equivalent of at least -0.50 D in either eye) measured with retinoscopy affected 73.1% of children 15 years of age, 78.4% with autorefraction. The prevalence of myopia was 3.3% in 5-year-olds with retinoscopy and 5.7% with autorefraction. Females had a significantly higher risk of myopia. Hyperopia (+2.00 D or more) measured with retinoscopy was present in 16.7% of 5-year-olds, 17.0% with autorefraction. The prevalence of hyperopia was below 1% in 15-year-olds, with both methods. Astigmatism (cylinder of > or = 0.75 D) was present in 33.6% of children with retinoscopy and in 42.7% with autorefraction. The prevalence of reduced vision because of myopia is high in school-age children living in metropolitan Guangzhou, representing an important public health problem. One third of these children do not have the necessary corrective spectacles. Effective strategies are needed to eliminate this easily treated cause of significant visual impairment.

0 comments Cited 111 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Refractive error in urban and rural adult Chinese in Beijing.

G. Fan, Jianjun Li, Liang Xu … (2005)

To evaluate refractive error and its demographic associations in an urban and rural population in northern China. Epidemiological study. The Beijing Eye Study is a population-based cohort study in northern China including 4439 subjects. Excluding pseudophakic and aphakic patients, the present study involved 4319 subjects. It was divided into a rural part (1905 [44.1%] subjects) and an urban part (2414 [55.9%] subjects). Mean age was 55.85+/-10.33 years (range, 40-90). Standardized ophthalmologic examination. For statistical analysis, the spherical equivalent was converted to binary variables, and logistic regression was used to investigate the association with continuous or categorical independent variables. Refractive error. Mean refractive error measured -0.33+/-2.22 diopters (D) (range, -20.88 to +7.88). Myopia of >-0.50 D, -1.0 D, >-6.0 D, and >-8 D, respectively, occurred in 22.9% (95% confidence interval [CI], 21.7-24.2), 16.9% (95% CI, 15.8-18.0), 2.6% (95% CI, 2.2-3.1), and 1.5% (95% CI, 1.1-1.9) of the subjects, respectively. Myopic refractive error was associated significantly with younger age (P -8 D) was associated with age (P or =1 D was associated significantly with age (P or =1 D was associated significantly with age (P<0.001), lower UCVA (P = 0.003), lower BCVA (P<0.001), urban area (P<0.001), and degree of cortical cataract (P = 0.027). As in other population-based studies on Chinese, myopia was more prevalent in younger subjects. Myopia was associated with urban region, educational background, female gender, decreasing visual acuity, and nuclear cataract. If longitudinal studies confirm the association of refractive error with age, refractive surgery may achieve emmetropia only for a limited time.

0 comments Cited 70 times – based on 0 reviews      Review now

Bookmark

Record: found
Abstract: found
Article: not found

Intraindividual comparison of visual performance after posterior chamber phakic intraocular lens with and without a central hole implantation for moderate to high myopia.

Kimiya Shimizu, Kazutaka Kamiya, Akihito Igarashi … (2012)

To compare postoperative visual performance after implantable Collamer lenses with and without a central hole (Hole ICL and conventional ICL) are implanted to correct moderate to high myopia.

0 comments Cited 40 times – based on 0 reviews      Review now

Bookmark

All references

Author and article information

Journal

Journal ID (nlm-ta): Medicine (Baltimore)

Journal ID (iso-abbrev): Medicine (Baltimore)

Journal ID (publisher-id): MEDI

Title: Medicine

Publisher: Wolters Kluwer Health

ISSN (Print): 0025-7974

ISSN (Electronic): 1536-5964

Publication date Collection: June 2017

Publication date (Electronic): 23 June 2017

Volume: 96

Issue: 25

Electronic Location Identifier: e7294

Affiliations

Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, Hunan, China.

Author notes

[∗ ]Correspondence: Xiao-Bo Xia, Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, Hunan, China (e-mail: xbxia21@ 123456163.com ); Wei-Tao Song, Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, Hunan, China (e-mail: wtsong1980@ 123456126.com )

Article

Publisher ID: MD-D-17-02268 Accession ID: 07294

DOI: 10.1097/MD.0000000000007294

PMC ID: 5484253

PubMed ID: 28640145

SO-VID: 0270fa66-d57e-491f-9ebf-9ab68c74440a

License:

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0

History

Date received : 12 April 2017

Date revision received : 1 June 2017

Date accepted : 5 June 2017

Custom metadata

OPEN-ACCESS TRUE

Keywords: high myopia,implantable collamer lens,visian icl v4,visian icl v4c,visual quality

Data availability:

Keywords: high myopia, implantable collamer lens, visian icl v4, visian icl v4c, visual quality

Comparison of Implantable Collamer Lens Visian ICL V4 and ICL V4c for high myopia : A cohort study

Read this article at

Abstract

Related collections

Hogrefe Medicine

Most cited references 25

Refractive error and visual impairment in urban children in southern china.

Refractive error in urban and rural adult Chinese in Beijing.

Intraindividual comparison of visual performance after posterior chamber phakic intraocular lens with and without a central hole implantation for moderate to high myopia.

Author and article information

Journal

Affiliations

Author notes

Article

History

Categories

Custom metadata

Comments

Comment on this article

Similar content 796

Cited by 18

Most referenced authors 272