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  • Title: Five-year functional outcomes and vault of -20 diopter myopic phakic intraocular lens implantation.
    Author: Lisa C, Baamonde B, Pérez-Vives C, Montés-Micó R, Alfonso JF.
    Journal: J Cataract Refract Surg; 2015 Dec; 41(12):2724-30. PubMed ID: 26796453.
    Abstract:
    PURPOSE: To evaluate refractive and visual outcomes and complications associated with phakic intraocular lens (pIOL) implantation to correct high myopia. SETTINGS: Fernández-Vega Ophthalmological Institute, Oviedo, Spain. DESIGN: Retrospective observational case series. METHODS: Uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA), refraction, vault, and adverse effects were evaluated after 5 years with Visian ICMV4 pIOL. RESULTS: Mean spherical equivalent (SE) dropped from -18.32 ± 2.37 diopters (D) preoperatively to -0.88 ± 0.52D 5 years postoperatively; 61% of eyes were within ±0.75 D of the target. The mean Snellen decimal CDVA and UDVA were 0.73 ± 0.23 and 0.55 ± 0.26, respectively. More than 50% of eyes achieved 20/25 or better CDVA postoperatively. Four eyes had lost 2 or 1 lines of CDVA, 10 eyes had not lost any lines from preoperatively, and 46 eyes had gained 1 or more lines of CDVA 5 years postoperatively. The safety index was 1.26 ± 0.32. Forty eyes had UDVA of 20/40 or better postoperatively. The efficacy index was 0.99 ± 0.42. At 5-year follow-up, the mean central vault was 475.28 ± 216.38 μm. No eyes showed central contact between the pIOL and crystalline lens. Nevertheless, 10 eyes showed peripheral contact with a central vault between 150 and 260 μm. Two eyes developed anterior subcapsular cataract, although only 1 eye required cataract surgery. CONCLUSIONS: Predictability, safety and effective outcomes of posterior pIOL of (- were good, as well as postoperative complications over the long term. A central vault of 260 μm was enough to prevent the peripheral contact between the pIOL and crystalline lens in eyes with high myopia. FINANCIAL DISCLOSURE: The authors have no proprietary interest in any of the materials mentioned in this article.
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