Abstract:
PURPOSE:To evaluate adhesion of Acanthamoeba trophozoites to different silicone hydrogel contact lens (SHCL) generations with and without multipurpose contact lens care solution (MPS) treatment. METHODS:Acanthamoeba lugdunensis L3a trophozoites were inoculated onto discs trimmed from SHCLs: first generation, Air Optix (Lotrafilcon B) with a plasma surface treatment, second generation, Acuvue Oasys (Senofilcon A), which contains an internal wetting agent (Hydraclear), and third generation, Biofinity (Comfilcon A) with no surface treatment. After 18-hour inoculation, the number of adherent trophozoites on SHCLs was counted as the control under phase contrast microscopy. The effects of the 3 different MPSs, Opti-Free Express, ReNu Fresh, and Biotrue, soaking SHCLs for 6 hours, on Acanthamoeba adhesion were analyzed. Scanning electron microscopic examination was performed for assessment of Acanthamoeba attached on the lens surface. RESULTS:Acanthamoeba trophozoites showed greater adhesion to Air Optix than to Acuvue Oasys and Biofinity (P < 0.05). On Air Optix and Acuvue Oasys, the number of adherent Acanthamoeba was significantly reduced compared with the control after treatment with Opti-Free Express (P < 0.05), but not significantly reduced by treatment with ReNu Fresh and Biotrue (P > 0.05). Acanthamoeba did not adhere to Biofinity regardless of MPSs treatment. Attachment of the acanthopodia of Acanthamoeba on the curved ridge of the Air Optix lens surface was observed. CONCLUSIONS:Acanthamoeba showed greater affinity for the first-generation SHCL and seemed to be more attached on SHCLs with more ridges. MPS with myristamidopropyl dimethylamine reduced the adhesion rate.
journal_name
Corneajournal_title
Corneaauthors
Lee GH,Lee JE,Park MK,Yu HSdoi
10.1097/ICO.0000000000000788subject
Has Abstractpub_date
2016-05-01 00:00:00pages
663-8issue
5eissn
0277-3740issn
1536-4798journal_volume
35pub_type
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