title: Calculation of intraocular lens surface free energy and its components from contact angle measurements.
abstract: One of the most important biomaterial characteristics involved in bacterial adhesion on intraocular lenses (IOLs) is hydrophobicity. We calculated the hydrophobicity parameters of IOLs made of 6 different materials (polymethylmethacrylate, PMMA, heparin surface-modified PMMA, HSM-PMMA, silicone, hydrophilic and hydrophobic acrylics and collamer). Values of IOL surface free energy components were determined from contact angle measurements, using the Fowkes, Owens-Wendt and Good-van Oss calculations. Contact angles were higher for silicone and hydrophobic acrylic materials and lower for collamer and hydrophilic acrylic materials. The values of IOL surface free energy components obtained with the 3 different calculations were homogenous. According to the Owens-Wendt calculation, the IOLs could be separated into dispersive implants (hydrophobic acrylic, silicone and PMMA) and polar implants (collamer, hydrophilic acrylic and HSM-PMMA).
authors.affiliation: Service d'Ophtalmologie, Centre Hospitalier Universitaire de Nice Saint-Roch, Nice, France.
authors.forename: Stéphanie
authors.initials: S
authors.lastname: Baillif
authors.forename: Geneviève
authors.initials: G
authors.lastname: Baziard-Mouysset
authors.forename: Christine
authors.initials: C
authors.lastname: Roques
authors.forename: Yves
authors.initials: Y
authors.lastname: Baziard
authors.forename: Laurent
authors.initials: L
authors.lastname: Kodjikian
mesh_terms: D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D007910:Lenses, Intraocular; D013499:Surface Properties
chemical_list: D020099:Coated Materials, Biocompatible