Advertisement

Topics

Optimizing the vault of collagen copolymer phakic intraocular lenses in eyes with keratoconus and myopia: Comparison of 2 methods.

Summary of "Optimizing the vault of collagen copolymer phakic intraocular lenses in eyes with keratoconus and myopia: Comparison of 2 methods."


PURPOSE:
To compare 2 methods for optimizing the final central vault of a collagen copolymer posterior chamber phakic intraocular lens (pIOL) (Visian Implantable Collamer Lens) in eyes with keratoconus and myopia.
SETTING:
Private practice, Beverly Hills, California, USA.
DESIGN:
Comparative interventional study.
METHODS:
The length of the pIOL to implant in keratoconic eyes with myopia was selected based on the white-to-white (WTW) distance or the sulcus-to-sulcus (STS) distance using the pIOL manufacturer's protocol. The final central vault distance was compared a minimum of 3 months postoperatively.
RESULTS:
The pIOL length was based on WTW measurements in 8 eyes of 6 patients and on STS measurements in 8 eyes of 5 patients. There was no significant difference between the 2 groups in the mean preoperative WTW distance, STS distance, or manifest refraction spherical equivalent (MRSE) (P = .22, P = .37, and P = 1.00, respectively). The mean postoperative vault was 1.03 corneal thickness +/- 0.72 (SD) in the WTW group and 1.18 +/- 0.35 corneal thickness in the STS group (P = .61). The vault distance was less than 1.0 corneal thickness in 3 eyes (37.5%) in the WTW group and 1 eye (12.5%) in the STS group. A small postoperative vault was associated with a high preoperative MRSE (P = .03).
CONCLUSIONS:
The WTW and STS methods both provided adequate final central pIOL vault in keratoconic eyes with myopia. The STS calculations gave greater final vault and higher vault predictability, although the difference between the 2 methods was not statistically significant. FINANCIAL
DISCLOSURE:
Neither author has a financial or proprietary interest in any material or method mentioned. Additional disclosure is found in the footnotes.

Affiliation

From Boxer Wachler Vision Institute, Beverly Hills, California, USA.

Journal Details

This article was published in the following journal.

Name: Journal of cataract and refractive surgery
ISSN: 1873-4502
Pages:

Links

DeepDyve research library

PubMed Articles [2977 Associated PubMed Articles listed on BioPortfolio]

Intraocular Pressure After Implantation of a Phakic Collamer Intraocular Lens With a Central Hole.

To investigate the middle-term intraocular pressure (IOP) results after implantation of a posterior chamber collagen copolymer phakic intraocular lens (IOL) (V4c Visian; STAAR Surgical Co., Nidau, Swi...

Posterior chamber collagen copolymer phakic intraocular lens with a central hole for moderate-to-high myopia: First experience in China.

The purpose of this article is to evaluate the clinical outcomes of a posterior chamber phakic intraocular lens (pIOL) (Visian Implantable Collamer Lens V4c) for the correction of moderate to high myo...

Material Analysis of Spontaneously Subluxated Iris-Fixated Phakic Intraocular Lenses.

To conduct a material analysis of spontaneously subluxated iris-fixated phakic intraocular lenses (IOLs) using light and scanning electron microscopy.

Intraoperative Optical Coherence Tomography Vault Measurement in Posterior Chamber Phakic Intraocular Lens Implantation.

To describe the use of intraoperative optical coherence tomography (OCT) vault measurement in 5 cases of posterior chamber phakic intraocular lens (IOL) implantation.

Excimer Laser Versus Phakic Intraocular Lenses for Myopia and Astigmatism: A Meta-Analysis of Randomized Controlled Trials.

Meta-analysis of randomized controlled trials (RCTs) which compared excimer laser refractive surgery and phakic intraocular lenses (PIOLs) for the treatment of myopia and astigmatism.

Clinical Trials [1445 Associated Clinical Trials listed on BioPortfolio]

An Open-Label Evaluation of Degree of Accommodation in Pseudophakic Patients Bilaterally Implanted With Monofocal Intraocular Lenses

This study will determine the ability of three different intraocular lenses to accommodate in patients who have previously undergone bilateral intraocular lens implantation.

Evaluating the Effect of Laser Vision Surgery, Phakic Intraocular Lens Implantation, Cataract Surgery, and Pupil Dilation on the Iris Recognition Scanner Function of Smartphone

This study included patients who visit for refractive surgery (photorefractive keratectomy, photorefractive keratectomy with with corneal collagen cross linking, laser in situ keratomileus...

Acrylate Intraocular Lenses in Cataract Surgery of Uveitis Patients

Cataract is a common complication in uveitis patients. Cataract operations with intraocular lens implantation are difficult in these patients because of complication due to the biocompatib...

Wavefront Analisys and Contrast Sensitivity of Spherical and Aspherical Intraocular Lenses

Purpose:To compare visual performance, total and high order wavefront aberrations (coma, spherical aberration and other terms) and contrast sensitivity in eyes implanted with one monofocal...

Visual Acuity After the Combined Binocular Implantation of +2.75 Diopters and +3.25 Diopters Tecnis Multifocal Intraocular Lenses.

The objective of this study is to assess the visual outcome after the combined binocular implantation of +2.75 D and +3.25 D full-diffractive multifocal intraocular lenses.

Medical and Biotech [MESH] Definitions

Lenses, generally made of plastic or silicone, that are implanted into the eye in front of the natural EYE LENS, by the IRIS, to improve VISION, OCULAR. These intraocular lenses are used to supplement the natural lens instead of replacing it.

Artificial implanted lenses.

Copolymer of divinyl ether and maleic anhydride that acts as an immunostimulant with antineoplastic and anti-infective properties. It is used in combination with other antineoplastic agents.

Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999)

An alternative to REFRACTIVE SURGICAL PROCEDURES. A therapeutic procedure for correcting REFRACTIVE ERRORS. It involves wearing CONTACT LENSES designed to force corrective changes to the curvature of the CORNEA that remain after the lenses are removed. The effect is temporary but is maintained by wearing the therapeutic lenses daily, usually during sleep.

Quick Search
Advertisement
 


DeepDyve research library

Relevant Topic

Ophthalmology
Ophthalmology is the branch of medicine that is devoted to the study and treatment of eye diseases. As well as mild visual defects correctable by lenses, ophthalmology is concerned with glaucoma, uveitis and other serious conditions affecting the eye, ...


Searches Linking to this Article