Figure 1. Examples of SDS gel analysis of the protein extracts. Lane 1 shows the balafilcon A lens with Opti-Free extract. Lane 2 shows the lotrafilcon B lens with ClearCare extract, and lane 3 shows the senofilcon A lens with ClearCare extract. Lane 4 shows galyfilcon A lens with Opti-Free extract. Band A is the tear lysozyme, and Band B shows unidentified proteins.