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

23:11 EDT 23rd May 2015 | BioPortfolio

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

PubMed Articles [2992 Associated PubMed Articles listed on BioPortfolio]

Prevalence of cataract after collagen copolymer phakic intraocular lens implantation for myopia, hyperopia, and astigmatism.

To evaluate the prevalence of cataract after Implantable Collamer Lens phakic intraocular lens (pIOL) implantation with different models at different ages and for different refractive powers.

PARS PLANA VITRECTOMY COMBINED WITH CATARACT EXTRACTION: A Comparison of Surgical Outcomes Using Single-Piece and Multipiece Foldable Intraocular Lenses.

To assess whether complication rates are comparable between phacovitrectomy using multipiece lenses versus single-piece foldable intraocular lenses.

Evaluation of Rotation and Visual Outcomes After Implantation of Monofocal and Multifocal Toric Intraocular Lenses.

To evaluate rotational stability and its influence on postoperative visual acuity of different monofocal and multifocal toric intraocular lenses (IOLs).

Long-Term Effect of Selective Laser Trabeculoplasty on Intraocular Pressure in Pseudoexfoliation Glaucoma.

Background: Selective laser trabeculoplasty has been found to be effective as an adjunct to topical medical therapy in glaucoma. This analysis examines the intraocular pressure lowering effect of lase...

Higher-Order Aberrations Associated With Better Near Visual Acuity in Eyes With Aspheric Monofocal IOLs.

To investigate higher-order aberrations (HOAs) related to increased uncorrected near visual acuity in eyes with aspheric monofocal intraocular lenses.

Clinical Trials [896 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.

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...

Assessing the Performance of Lotrafilcon A Lenses During a Three Month Period

This trial will aim to assess lotrafilcon A lenses, in terms of comfort and symptoms, that include the following upgrades: the addition of Copolymer 845 (Co845) as a conditioning packaging...

Evaluation of Lotrafilcon A Upgrade Lenses Over a Three Month Period

This trial will aim to assess lotrafilcon A lenses that include the following upgrades: the addition of Copolymer 845 (Co845) as a conditioning packaging saline additive, an inversion mark...

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.

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.

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

Search BioPortfolio:
Loading
Advertisement

Relevant Topic

Ophthalmology
Latest News Clinical Trials Research Drugs Reports Corporate
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, ...

Advertisement

Searches Linking to this Article