Phakic Intraocular Lenses

Lovisolo, Carlo; Reinstein, Dan Z.

doi:10.1016/j.survophthal.2005.08.011

Cited by 197 publications

(177 citation statements)

References 204 publications

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“…The collagen increases biocompatibility, facilitating the deposition of a monolayer of fibronectin on the pIOL surface, thus making the implant invisible to the immune system. 20 In addition, the thin and flexible haptics allow adaptation to the intraocular anatomy and dynamics. The lens is available in refractive powers ranging between À 3 and À 20 D in 0.50 D steps for the correction of myopia and powers between þ 3 and þ 15 D in 0.50 D steps for the correction of hyperopia.…”

Section: Prl Descriptionmentioning

confidence: 99%

“…The exact algorithm used for this specific calculation is not provided by the manufacturer, but it could possibly be quite similar to that used for power calculations of other types of pIOLs (Van der Heijde formula). 20 …”

Section: Selecting Prl Size and Powermentioning

confidence: 99%

“…14,15,17,19,20,33,35,38 A possible factor accounting for this might be the protective effect of the rotating design of the pIOL, avoiding the continuous contact between the pIOL and any particular area of the anterior surface of the crystalline lens. Stabilization of the PRL on the cilliary sulcus should be avoided to protect the crystalline lens from the inflammatory aggression induced when interaction with this structure occurs.…”

Section: Complicationsmentioning

confidence: 99%

“…16 There are a number of studies evaluating the outcomes obtained with the different models of ICL, and therefore there is a complete characterization of the refractive outcomes and complications resulting from the implantation of this pIOL. [17][18][19][20][21][22][23][24] The current review will focus on the other available posterior chamber pIOL, the PRL, which has been very recently removed from the market. This pIOL was initially developed in 1987, now in its third generation, and was conceived to be implanted in the posterior chamber through an autosealing corneal incision.…”

Section: Introductionmentioning

confidence: 99%

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The posterior chamber phakic refractive lens (PRL): a review

Pérez-Cambrodí

Piñero

Ferrer-Blasco

et al. 2012

Eye

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Implantation of phakic intraocular lenses (pIOLs) is a reversible refractive procedure, preserving the patient's accommodative function with minimal induction of higher order aberrations compared with corneal photoablative procedures. Despite this, as an intraocular procedure, it has potential risks such as cataracts, chronic uveitis, pupil ovalization, corneal endothelial cell loss, pigmentary dispersion syndrome, pupillary block glaucoma, astigmatism, or endophthalmitis. Currently, only two models of posterior chamber pIOLs are commercially available, the implantable collammer lens (STAAR Surgical Co.) and the phakic refractive lens (PRL; Zeiss Meditec). The number of published reports on the latter is very low, and some concerns still remain about its long-term safety. The present article reviews the published literature on the outcomes after PRL implantation in order to provide a general overview and evaluate its real potential as a surgical refractive option.

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Section: Prl Descriptionmentioning

confidence: 99%

Section: Selecting Prl Size and Powermentioning

confidence: 99%

Section: Complicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The posterior chamber phakic refractive lens (PRL): a review

Pérez-Cambrodí

Piñero

Ferrer-Blasco

et al. 2012

Eye

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“…2-4 It appears, therefore, that estimating sulcus-to-sulcus from the white-to-white diameter could be responsible for the occasional sizing issues observed. 1 The Artemis very high-frequency (VHF) digital ultrasound (US) arc scanner (Ultralink LLC) can image the anterior segment, providing measurement of intraocular dimensions such as the angle-to-angle width, sulcus-to-sulcus width, and anterior chamber depth. 1,2,5,6 The aim of this study was to determine the accuracy, repeatability, and reproducibility of lateral dimensions similar in magnitude to those found in the anterior segment with the Artemis VHF digital US arc scanner.…”

mentioning

confidence: 99%

Accuracy, repeatability, and reproducibility of Artemis very high-frequency digital ultrasound arc-scan lateral dimension measurements

Reinstein¹,

Archer²,

Silverman³

et al. 2006

Journal of Cataract and Refractive Surgery

Self Cite

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Purpose-To determine the accuracy, repeatability, and reproducibility of measurement of lateral dimensions using the Artemis (Ultralink LLC) very high-frequency (VHF) digital ultrasound (US) arc scanner. Setting-London Vision Clinic, London, United Kingdom.Methods-A test object was measured first with a micrometer and then with the Artemis arc scanner. Five sets of 10 consecutive B-scans of the test object were performed with the scanner. The test object was removed from the system between each scan set. One expert observer and one newly trained observer separately measured the lateral dimension of the test object. Two-factor analysis of variance was performed. The accuracy was calculated as the average bias of the scan set averages. The repeatability and reproducibility coefficients were calculated. The coefficient of variation (CV) was calculated for repeatability and reproducibility.Results-The test object was measured to be 10.80 mm wide. The mean lateral dimension bias was 0.00 mm. The repeatability coefficient was 0.114 mm. The reproducibility coefficient was 0.026 mm. The repeatability CV was 0.38%, and the reproducibility CV was 0.09%. There was no statistically significant variation between observers (P = .0965). There was a statistically significant variation between scan sets (P = .0036) attributed to minor vertical changes in the alignment of the test object between consecutive scan sets. Conclusion-TheArtemis VHF digital US arc scanner obtained accurate, repeatable, and reproducible measurements of lateral dimensions of the size commonly found in the anterior segment.Anterior segment dimensions such as angle-to-angle or sulcus-to-sulcus diameters apply directly to the sizing of intraocular lenses (IOLs). Accurate determination of these lateral anterior segment dimensions is a key factor in the safety of these devices.The sulcus-to-sulcus width has to date only been estimated from the horizontal corneal diameter (white-to-white) obtained externally. Some surgeons use the white-to-white measurement, and NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript others size the IOL by adding 0.5 to 1.0 mm to the white-to-white measurement. 1 However, published studies have not found a significant anatomical correlation between white-to-white and sulcus-to-sulcus measurements. 2-4 It appears, therefore, that estimating sulcus-to-sulcus from the white-to-white diameter could be responsible for the occasional sizing issues observed. 1The Artemis very high-frequency (VHF) digital ultrasound (US) arc scanner (Ultralink LLC) can image the anterior segment, providing measurement of intraocular dimensions such as the angle-to-angle width, sulcus-to-sulcus width, and anterior chamber depth. 1,2,5,6 The aim of this study was to determine the accuracy, repeatability, and reproducibility of lateral dimensions similar in magnitude to those found in the anterior segment with the Artemis VHF digital US arc scanner. Materials and MethodsThis prospective study was designed to quantify the accura...

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Primary and Secondary Angle-Closure Glaucomas

Cyrlin

2010

The Glaucoma Book

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Phakic Intraocular Lenses

Cited by 197 publications

References 204 publications

The posterior chamber phakic refractive lens (PRL): a review

The posterior chamber phakic refractive lens (PRL): a review

Accuracy, repeatability, and reproducibility of Artemis very high-frequency digital ultrasound arc-scan lateral dimension measurements

Primary and Secondary Angle-Closure Glaucomas

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