Objective: In functional care solution, the menthol absorption and release of contact lenses was studied. Methods: The sample was concentrated by C18 column solid-phase extraction, and analyzed by capillary gas chromatography and FID detector. Results: The menthol absorption and release of per unit weight (mg) J1102809 and G1105599 contact lenses were 0.118 2 μg、0.120 5 μg,and 0.004 3 μg、0.005 6 μg, respectively. Conclusion: The results show that menthol in functional care solution might be safe for use taking the trace quantity of menthol into account. |