tokens: METHODS : Millipore ultrafiltration membranes of three different pore sizes were used as model lenticule materials.The nominal membrane pore sizes were 0.1 microm , 0.45 microm , and 3 microm ; the surface roughness increased in the same order The membranes were coated with a thin layer of collagen I and implanted in a circular pocket of the anterior cornea of adult cats , and were clinically evaluated for the extent of epithelialization and the persistence of epithelial attachment .
folded_tokens: method : Millipore ultrafiltration membrane of three different pore size be use as model lenticule materials.the nominal membrane pore size be 0.1 microm , 0.45 microm , and 3 microm ; the surface roughness increase in the same order the membrane be coat with a thin layer of collagen i and implant in a circular pocket of the anterior cornea of adult cat , and be clinically evaluate for the extent of epithelialization and the persistence of epithelial attachment .