Fig. 1

The efficacy of various contact lens care solutions against A. castellanii trophozoites using an alamar-blue colorimetric assay. A. castellanii trophozoites (3.25 × 10⁴ cells/well) were incubated with each MPS solution with contact times ranging from 1 to 96 h, aspirated, and then after the addition of fresh media, alamar blue was added and the solution incubated; absorbance was read after incubation. Statistical significance at p > 0.01 indicated by asterisk comparing ASP-57 v. control (PBS) at all contact times attempted