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Experimental design. A: Daily ultraviolet B (UVB) light exposure (arrowhead) was performed for 7 days. No protection was given to the UVB group. The Etafilcon A and Nelfilcon A groups were provided protection by the contact lenses before exposure to ultraviolet radiation (UVR). B: The properties of the contact lenses used in this study. C: The UV transmittance properties of the Etafilcon A and Nelfilcon A contact lenses.
