Artisan phakic intraocular lens for myopia Short-term results of a prospective, multicenter study

Maloney, Robert K.; Nguyen, Lien H.; John, Maurice E.

doi:10.1016/s0161-6420(02)01170-3

Cited by 132 publications

(91 citation statements)

References 54 publications

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“…Nonprogressive lens vacuoles had not been observed. 1 Pupil ovalization can also be a complication of anterior chamber IOLs; in this study, all pupils returned to round after 6 months.…”

mentioning

confidence: 52%

“…To treat high-myopia patients, the new techniques can make the cornea flap thinner and thinner; however, this increases the risk of corneal ectasia, thus decreasing visual quality. 1 In recent years, phakic lens implantation in the anterior or posterior chamber has gained increasing popularity for high-myopia treatment; 2 it offers a promising alternative, particularly for high-myopia correction up to À20.0 diopters (D). These intraocular operations retain the patients' clear lens, and thus the accommodation function is reserved; they maintain the original prolate shape of the cornea, as a result of which the optical qualities of the cornea are not altered.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with equal diameter laser ablation, this IOL is closer to the pupil, resulting in a better coverage, which achieves less night-associated photic phenomena. 1 LASIK and PRK also have been associated with alteration of the corneal shape in myopic patients. 16,17 This can increase coma and spherical-order aberrations and decrease contrast sensitivity.…”

mentioning

confidence: 99%

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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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“…Nonprogressive lens vacuoles had not been observed. 1 Pupil ovalization can also be a complication of anterior chamber IOLs; in this study, all pupils returned to round after 6 months.…”

mentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

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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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“…Vacúolos no cristalino foram observados no pós-operatório de quatro casos (3,1%) operados no estudo de Maloney et al, sendo causados, segundo os autores, por trauma direto na cirurgia ou pelo viscoelástico utilizado (45) . Estudos demonstraram haver uma distância segura entre a LIO e o cristalino, o que parece reduzir o aparecimento deste tipo de complicação (38) .…”

Section: Catarataunclassified

Lentes fácicas de câmara anterior

Nosé¹,

Forseto²

2012

Rev. bras.oftalmol.

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Os autores declaram inexistir conflitos de interesseRecebido para publicação em 5/4/2011 -Aceito para publicação em 26/11/2011 RESUMOOs implantes em olhos fácicos apresentam-se como uma opção para a correção de altas ametropias. De acordo com sua localização podem ser classificados como de câmara anterior ou posterior, sendo que os primeiros subdividem-se em fixação iriana ou de suporte angular. Além da correção da miopia, as lentes de fixação iriana apresentam modelos para hipermétropes e astigmatas. Várias modificações no desenho das lentes foram propostas nas últimas décadas com a finalidade de reduzir complicações tardias, como a perda endotelial progressiva. Cuidados no intraoperatório devem ser tomados de forma a diminuir a perda endotelial aguda relacionada ao trauma. Avanços nos métodos de triagem pré-operatória também melhoraram a segurança do procedimento. A estimativa do poder dióptrico é baseada nos cálculos de Van der Heijde, sendo dependente da profundidade de câmara anterior, do equivalente esférico da refração e da média ceratométrica. Resultados a longo prazo demonstram a eficácia, previsibilidade e segurança do procedimento. Dependendo do modelo, além da possibilidade de perda endotelial, outras possíveis complicações incluem: irite, dispersão pigmentar, atrofia de íris, ovalização pupilar, rotação, descentração ou deslocamento da lente, hipertensão ocular e bloqueio pupilar. Modelos dobráveis atualmente disponíveis vêm apresentado resultados bastante promissores com redução da taxa de complicações.Descritores: Lentes intraoculares fácicas; câmara anterior; erros de refração; procedimentos cirúrgicos refrativos; complicações intraoperatórias; complicações pós-operatórias ABSTRACT The phakic intraocular lenses (pIOLs) are a good option for the correction of high refractive errors. According to their

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“…[1][2][3][4][5][6] Because of the close proximity of the ICPIOL and intraocular structures, some authors, [7][8][9] however, have expressed concern about the potential for the ICPIOL to endothelial cell reduction resulting from contact between the ICPIOL and cornea, iritis due to contact with the delicate iris tissue, and secondary glaucoma due to pupillary block or pigment dispersion. Precise evaluation of ICPIOL's position in the patient with high myopia in different body positions plays an important role in early detection of ICPIOL-intraocular tissue interaction and prevention in potential complications.…”

Section: Introductionmentioning

confidence: 99%

Position of myopic iris-claw phakic intraocular lens by Scheimpflug photography and ultrasound biomicroscopy

et al. 2007

Eye

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Purpose To evaluate the position of iris-claw phakic intraocular lens (ICPIOL) in highly myopic eyes by Scheimpflug photography (SP) and ultrasound biomicroscopy (UBM). Methods Nine eyes of five patients aged 31710 years with average spherical equivalent of À16.0475.46 D (range À7.88 to À 22.88 D) were enrolled in this prospective study and implanted with Verisyse ICPIOLs (AMO). The anterior segment was evaluated by SP and UBM preoperatively and for at least 1 month postoperatively. The statistical significance may be questionable due to the limited number (nine) of eyes.Results By SP and UBM, the distance between corneal endothelium and lens (anterior chamber depth) preoperatively was 3.1070.14 and 3.0770.11 mm, respectively; between ICPIOL and corneal endothelium (pseudo-anterior chamber depth), 1.8870.09 and 1.9970.12 mm, respectively; between lens and posterior surface of ICPIOL (IL), 0.7670.13 and 0.6770.06 mm, respectively; between superior optic edge and iris (SOEI), 0.2370.23 and 0.5870.24 mm, respectively; between inferior optic edge and iris (IOEI), 0.0770.13 and 0.4170.22 mm, respectively; between ICPIOL haptics and the angle of anterior chamber (HA), 0.9070.17 and 1.4570.13 mm, respectively. ACD was well correlated between the two methods, but PACD, IL, OEI, HA were not. The postoperative measures, except IL, were significantly different between the two methods. Conclusion The differences between measurements by SP and UBM reveal the ICPIOL's position variations with change of body position. Nevertheless, it seems adequate that space is maintained between ICPIOL and corneal endothelium, angle, and crystalline lens. The ICPIOL implanted in phakic eyes seems a safe alternative for treatment of high myopia.

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Artisan phakic intraocular lens for myopia Short-term results of a prospective, multicenter study

Cited by 132 publications

References 54 publications

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

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

Lentes fácicas de câmara anterior

Position of myopic iris-claw phakic intraocular lens by Scheimpflug photography and ultrasound biomicroscopy

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