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  • Title: Calcification of Hydroview H60M intraocular lenses: aqueous humor analysis and comparisons with other intraocular lens materials.
    Author: Nakanome S, Watanabe H, Tanaka K, Tochikubo T.
    Journal: J Cataract Refract Surg; 2008 Jan; 34(1):80-6. PubMed ID: 18165086.
    Abstract:
    PURPOSE: To compare the level of calcification on Hydroview H60M hydrophilic acrylic intraocular lenses (IOLs) (Bausch & Lomb) and other IOL materials. SETTING: Omori Medical Center, Department of Ophthalmology, Toho University, Tokyo, Japan. METHODS: The levels of calcification on Hydroview H60M hydrophilic acrylic IOLs, AcrySof SA60AT hydrophobic acrylic IOLs (Alcon Surgical, Inc.), Sensar AR40e hydrophobic acrylic IOLs (Advanced Medical Optics), ClariFlex (Advanced Medical Optics) silicone IOLs, and the MeniFlex ENV13 (Menicon) poly(methyl methacrylate) IOLs were compared in a calcium phosphate solution containing albumin. In a concentration-change experiment, the calcium and phosphate concentration levels were changed and the results observed by scanning electron microscopy. RESULTS: The Hydroview H60M IOL had the largest amount of deposits. Small amounts of deposits were found on the other IOLs in the following decreasing order: AcrySof SA60AT, Sensar AR40e, ClariFlex, and MeniFlex ENV13. The amount of deposits on the Hydroview H60M IOLs was statistically significantly greater than the amount on the other IOLs (P<.01). CONCLUSIONS: The hydrophilic acrylic IOLs (Hydroview H60M) had significantly higher amounts of calcified deposits than IOLs of other materials, indicating that hydrophilic acrylic IOLs easily accumulate calcified deposits in the body when the concentrations of calcium, phosphate, and albumin in the aqueous humor fluctuate as a result of a blood-aqueous barrier breakdown.
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