Lipid uptake was different for the two materials : total lipid ( p < 0.007 ) , cholesterol esters ( p < 0.001 ) , cholesterol ( p < 0.001 EW only ) , and triglycerides/phospholipids ( p < 0.001 ) were higher for balafilcon A , whereas fatty acid ( p < 0.0025 EW only ) was higher for etafilcon A.