公开(公告)号：EP2464310A4

公开(公告)日：2015-01-21

申请号：EP10808854

申请日：2010-08-13

申请人： ACUFOCUS INC

发明人： CHRISTIE BRUCE ,  PETERSON EDWARD W ,  VAN DE POL CORINA

IPC分类号： A61F2/14

CPC分类号： A61F2/15 ,  A61F2/1451 ,  A61F2250/0024 ,  G02C7/046 ,  G02C7/165

摘要： Corneal inlays and masks and methods of improving vision of a patient with corneal inlays and masks are provided. Masks with an aperture can improve the vision of a patient, such as by increasing the depth of focus of an eye of a patient. For example, a mask can have an annular portion with a relatively low visible light transmission surrounding a relatively high transmission central portion, such as a clear lens or aperture. This provides an annular mask with a small aperture for light to pass through to the retina to increase depth of focus. The mask may also include nutrient transport structures that provide nutrient flow through mask to prevent nutrient depletion. These nutrient transport structures can be configured to concentrate nutrient transmission near a center region of the mask to provide more nutrient flow near the center region.