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SDS agarose gel electrophoresis of tear proteins in computer users >3h/day (position no.1–2), <3h/day (position no.3) and in intolerant contact lens wearers (position no.4–5) before treatment. Lactoferrin, lysozyme and albumin as tear biomarkers for tear aqueous deficiency, inflammatory reaction, and contact lens intolerance are indicated by arrows
