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AFM section analysis of balafilcon A before and after overnight incubation with 0.1% (w/v) HA solution.
Notes: Samples were characterized in a dry state by soft tapping in air. Sorbed HA uniformly covered the surfaces of the hydrogels, filling the pits to decrease pit depth and decreasing surface roughness.
Abbreviations: AFM, atomic force microscopy; HA, hyaluronic acid.
