Contrast sensitivity after implantation of toric iris-claw lenses in phakic eyes

Dick, H. Burkhard; Tehrani, Mana; Aliyeva, Shakhsanam

doi:10.1016/j.jcrs.2004.03.037

Cited by 28 publications

(16 citation statements)

References 14 publications

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“…The implantation of anterior chamber irisfixated PIOLs has been shown to be an effective surgical option for the treatment of refractive errors, with optical quality superior to that of corneal refractive surgeries [14][15][16][17][18]. The efficacy and safety of the Artisan iris-claw lens has been demonstrated in several multicenter studies [20,21].…”

Section: Discussionmentioning

confidence: 99%

“…It is well known that the endothelial cell count decreases with progress in age. the endothelial cell count in more risk in cases of shallow anterior chamber, extensive eye rubbing, or IOL displacement resulting from inadequate iris fixation or due to trauma even after long duration which may end in corneal decompensation and mandatory keratoplasty [17]. Progressive endothelial damage may be caused by mechanical contacts between the PIOL and corneal endothelium.…”

Section: Discussionmentioning

confidence: 99%

“…Iris-fixated PIOLs have been associated with several surgical complications such as elevation of IOP either transient or perminant, cataracts, pigment deposits, pupil distortion and chronic anterior segment inflammation [17]. Glaucoma may be attributed to the design of the PIOL with iris fixation associated with chronic anterior segment inflammation due to irritation of the iris tissue.…”

Section: Discussionmentioning

confidence: 99%

“…The name of the PIOL was changed to Artisan (Ophtec BV, Groningen, The Netherlands), and it is available for myopic patients with powers from −3 to −23.5 D. In 2004, the PIOL gained FDA approval under the name Verisyse Phakic IOL (Abbott Medical Optics, Inc., Santa Ana, CA), with available powers from −5 to −20 D. A toric Artisan model is also available in Europe with parameters similar to the Artisan, but with cylindrical powers up to -7.5D [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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Anterior Chamber Foldable Phakic Intra Ocular Lens Safety and Efficacy

AlAhmady¹

2016

J Clin Res Ophthalmol

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Purpose: Correction of myopia by implantation of intra ocular lens is a growing surgery. In this study I am trying to assess the visual outcome stability and safety of eyes undergoing Anterior chamber foldable phakic lens implantation (Artiflex) (Ophtec BV, Groningen, The Netherlands) or (veriflex) (AMO,Santa Ana,CA) for myopia unsuitable for LASIK and detection of early and late complications along three years follow up period.Methods: A retrospective analysis of 25 eyes of 16 patients underwent Anterior chamber foldable phakic IOL (Artiflex) or (Veriflex) implantation for correction of myopia all patients were unsuitable for LASIK all patients underwent surgery with one surgeon in same circumstances. Uncorrected visual acuity, corrected visual acuity (BCVA), higher-order aberrations, patient satisfaction, central endothelial cell count, and PIOL position centration and incarcerated iris tissue were determined along follow up period. Results:At the end of the 36 months of follow up period 14 of the 25 eyes (56 %) achieved BCVA better than that measured pre-operatively and 10 of the 25 eyes (40%) matched their pre-operative BCVA. One eye (4 %) attained a final BCVA worse than pre-operatively, due to recurrent uveitis. One patient (4%) need another surgery to fixate the lens due to slippage of incarcerated iris tissue with impending displacement. Conclusions:This study suggests that Anterior chamber foldable phakic IOL (iris claw lens insertion) Artiflex or Veriflex is beneficial in myopia, unsuitable for LASIK, matching or exceeding preoperative BCVA in the overwhelming majority of the cases. With no major complications however long standing follow up is needed to avoid major complications. Citation

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Anterior Chamber Foldable Phakic Intra Ocular Lens Safety and Efficacy

AlAhmady¹

2016

J Clin Res Ophthalmol

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“…Implantation of iris-fixated IOLs has been shown to maintain optical performance, 4 also with the potential to improve contrast sensitivity. 18 Considering predictability, 93.2% of the eyes were within the ±1.0 D of the desired correction. Postoperative optical performance was also significantly enhanced.…”

mentioning

confidence: 97%

Five-year follow-up after anterior iris-fixated intraocular lens implantation in phakic eyes to correct high myopia

Yuan

Ping

Wang

et al. 2011

Eye

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Purpose To evaluate the 5-year follow-up of safety, efficacy, predictability, stability, and complications of anterior iris-fixated phakic intraocular lens (pIOL) implantation to correct high myopia, and patients' satisfaction after implantation. Design Prospective, nonrandomized, and comparative (self-controlled) trial. Methods A prospective clinical trial of 84 eyes of 43 patients with high myopia was conducted. Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), refraction, endothelial cell count, intraocular pressure (IOP), anterior chamber depth, slit lamp biomicroscopy, and indirect ophthalmoscope were measured preoperatively and postoperatively. Results At the 5-year follow-up, UCVA was significantly improved, with 85.7% of eyes reaching 20/25 or better. No eyes experienced a loss in BSCVA, and 71.4% gained one or more lines of their preoperative BSCVA. There was a significant reduction in spherical errors in all patients after operation. Loss of endothelial cells was observed 3 years after operation and no more loss was observed 4 years after operation in statistical analysis. No increase in IOP was observed 5 years after operation in statistical analysis. No intraoperative complications were observed in this study. However, pigment precipitates of varying intensities on the lens optic were noted in all patients 1 day after operation, and only five eyes were observed to have the pigment residual five years after operation. Conclusion At the 5-year follow-up, the implantation of the anterior iris-fixated pIOL was proved to be effective, predictable and capable of reversibility to correct high myopia in phakic eyes. It was a safety addition to the laser refractive surgery. However, longer follow-up with larger numbers of patients is still necessary to evaluate long-term complications.

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Torische phake Intraokularlinsen

Dick

Buchner

2007

Ophthalmologe

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After more than 3 years of follow-up, the satisfactory results achieved with the toric iris-fixated phakic intraocular lens (IOL) mean we can regard implantation of this lens as a procedure with the potential to provide safe, predictable, effective and stable correction of astigmatic errors, providing patients are carefully selected and receive adequate preparation for surgery. The iris-fixated toric phakic IOL (Verisyse, Advanced Medical Optics; Artisan, Ophtec) is a PMMA lens with a total diameter of 8.5 mm and an optic diameter of 5 mm. It has a spherical anterior and a toric posterior surface. Its refractive power ranges from -2 dpt to -21 dpt for myopia and from +2 dpt to +12.5 dpt for the correction of hyperopia. Cylindrical correction is available from 2 dpt to 7.5 dpt. The Visian toric implantable Collamer lens (Staar) differs in that it is foldable and can be inserted through a very small incision of about 2.8 mm. It is placed in front of the natural lens in the ciliary sulcus. The aim of implanting these phakic IOLs is to correct the entire refractive error, meaning both the spherical and the astigmatic error, in a single step. Different lens models are available, and the selection depends on the direction of the cylinder axis and the anatomical situation, among other things.

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Contrast sensitivity after implantation of toric iris-claw lenses in phakic eyes

Abstract: Implantation of the Verisyse toric iris-claw lens in phakic eyes to correct high or moderate myopia with astigmatism has the potential to improve contrast vision. The mean contrast sensitivity increased considerably at all spatial frequencies compared with preoperative levels.

Cited by 28 publications

References 14 publications

Anterior Chamber Foldable Phakic Intra Ocular Lens Safety and Efficacy

Anterior Chamber Foldable Phakic Intra Ocular Lens Safety and Efficacy

Five-year follow-up after anterior iris-fixated intraocular lens implantation in phakic eyes to correct high myopia

Torische phake Intraokularlinsen

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