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“PURPOSE: To characterize patients with late intraocular lens (IOL) dislocation to evaluate possible risk factors, determine the time between cataract surgery and IOL repositioning, describe the surgical management, and estimate the incidence.
DESIGN: Case series.
METHODS: Medical records from the cataract surgery and IOL repositioning were reviewed.
RESULTS: The study enrolled 84 eyes, 63 with in-the-bag IOL dislocation and 21 with out-of-the-bag IOL dislocation. The prevalence of pseudoexfoliation
(PXF) was 60% and of glaucoma, 36%. A high proportion of eyes with IOL dislocation (37%) had zonular dehiscence at cataract surgery. The median time from cataract surgery to IOL INCB28060 cell line repositioning surgery was significantly shorter in eyes with out-of-the-bag IOL dislocation (3.2 years) than in eyes with in-the-bag IOL dislocation (6.7 years) (P = .029). The interval was also significantly shorter in eyes with zonular dehiscence. Using data from the National Cataract Register, the calculated incidence of IOL repositioning surgery per pseudophakic individuals in western Sweden was 0.050%.
CONCLUSIONS: The possible major predisposing factors for late IOL dislocation were PXF, glaucoma, and cataract surgery complicated by zonular dehiscence. Primary
placement of the IOL in the ciliary sulcus was associated with earlier IOL dislocation. Intraocular lens repositioning surgery using a posterior or anterior approach was successful in many cases.”
“Cellulose is an important biomass in natural material fields. Reactive polyhedral oligomeric silsesquioxane (R-POSS) bearing multi-N-methylol groups is novel high reactive POSS monomer. The nano-cellulose hybrids containing R-POSS were synthesized XMU-MP-1 concentration by crosslinking reaction. It was interesting to investigate properties and applications of hybrids containing R-POSS. In this work, nano-cellulose
hybrids as novel biosorbent were used for adsorpting copper and nickel ions in aqueous solution. Adsorption kinetics and equilibrium isotherm of Cu2+ and Ni2+ on the nano-cellulose hybrids were investigated. The results showed that R-POSS had been grafted to cellulose macromolecule. The nano-cellulose hybrids could form new adsorptive position for heavy metal ions. The adsorption capacities of hybrid materials were obviously higher than that of control cellulose. The adsorption of heavy metal ions on nano-cellulose hybrids followed the second-order model. The equilibrium isotherms for adsorpting copper and nickel ions on the hybrids followed Langmuir isotherm model. Nano-cellulose materials containing POSS as biosorbents or ultrafiltration membranes would be used in separation of toxic heavy metal ions. (C) 2011 Wiley Periodicals, Inc.