Journal of cataract and refractive surgery · 2012
Iris-fixated toric phakic intraocular lens for myopic astigmatism.
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Muñoz Gonzalo, Cardoner Antoni, Albarrán-Diego César, Ferrer-Blasco Teresa, Belda-Salmerón Lurdes
Аннотация
PURPOSE: To evaluate the efficacy, predictability, safety, stability, and complications of the Artiflex toric iris-fixated phakic intraocular lens (pIOL) for myopic astigmatism.
SETTING: Private practice surgery centers, Valencia and Terrassa, Spain.
DESIGN: Cohort study.
METHODS: At 12 months, refraction, uncorrected (UDVA) and corrected (CDVA) distance visual acuities, complications, pIOL misalignment, and endothelial cell count (ECC) were evaluated. Indices of success and misalignment were calculated using vector analysis.
RESULTS: The study enrolled 42 eyes in 25 patients aged 21 to 39 years. The mean spherical equivalent decreased from -8.85 diopters (D) ± 2.71 (SD) to -0.37 ± 0.46 D, with 66.7% of the eyes within ± 0.50 D. The mean cylinder power decreased from -2.90 D (range -1.50 to -5.00 D) to -0.39 D (range 0.00 to -1.50 D); refraction was highly stable. All eyes achieved a decimal UDVA of 0.5 or better and a CDVA of 0.8 or better. A gain of 1 line or more of CDVA was found in 69.1% of eyes. The mean clinical pIOL misalignment was 2.6 ± 1.8 degrees; 1 eye (2.4%) required surgical repositioning of the pIOL. The mean ECC decrease was 9.3% ± 1.8%; iris pigment precipitates were observed in 16.7% of eyes. Vector analysis showed excellent mean indices of success for overall (0.94 ± 0.04), spherical (0.96 ± 0.05), and astigmatic (0.95 ± 0.16) corrections; the mean angle of error was 1.8 ± 2.7 degrees.
CONCLUSION: Implantation of the toric pIOL was effective, predictable, safe, and stable for the correction of myopic astigmatism.
FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
SETTING: Private practice surgery centers, Valencia and Terrassa, Spain.
DESIGN: Cohort study.
METHODS: At 12 months, refraction, uncorrected (UDVA) and corrected (CDVA) distance visual acuities, complications, pIOL misalignment, and endothelial cell count (ECC) were evaluated. Indices of success and misalignment were calculated using vector analysis.
RESULTS: The study enrolled 42 eyes in 25 patients aged 21 to 39 years. The mean spherical equivalent decreased from -8.85 diopters (D) ± 2.71 (SD) to -0.37 ± 0.46 D, with 66.7% of the eyes within ± 0.50 D. The mean cylinder power decreased from -2.90 D (range -1.50 to -5.00 D) to -0.39 D (range 0.00 to -1.50 D); refraction was highly stable. All eyes achieved a decimal UDVA of 0.5 or better and a CDVA of 0.8 or better. A gain of 1 line or more of CDVA was found in 69.1% of eyes. The mean clinical pIOL misalignment was 2.6 ± 1.8 degrees; 1 eye (2.4%) required surgical repositioning of the pIOL. The mean ECC decrease was 9.3% ± 1.8%; iris pigment precipitates were observed in 16.7% of eyes. Vector analysis showed excellent mean indices of success for overall (0.94 ± 0.04), spherical (0.96 ± 0.05), and astigmatic (0.95 ± 0.16) corrections; the mean angle of error was 1.8 ± 2.7 degrees.
CONCLUSION: Implantation of the toric pIOL was effective, predictable, safe, and stable for the correction of myopic astigmatism.
FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.