PURPOSE: The aim of this study was to assess the effect of various tube parameters on corneal @entity1358 ( @entity1358 ) after insertion of Ahmed valves. METHODS: Thirty-nine eyes of 33 @entity1 with previous superotemporal (ST) Ahmed valve implantation and 20 eyes of 13 @entity1 with previous uncomplicated phacoemulsification and intraocular lens implantation but no history of @entity726 surgery were evaluated. Various tube parameters were measured with anterior segment optical coherence tomography. ST, central, and inferonasal (IN) @entity1358 and pachymetry were measured. Endothelial cell loss and @entity2687 was compared with those in the IN @entity267 . RESULTS: The mean age of the operated @entity1 was 58    22 years, and the mean time since @entity726 surgery was 2.5    2.6 years. Thirty-two of the 39 study eyes were pseudophakic. The @entity1358 was significantly lower in the ST endothelium than in the IN endothelium in eyes with @entity726 tube surgery (P < 0.001), although this relative reduction in ST @entity1358 was not greater than that seen in pseudophakic control eyes (P = 0.16). In univariate analysis, tube angle relative to the @entity267 and distance from the tip of the tube to the @entity267 were significant risk factors for decreased ST endothelial cell loss when assessed relative to the IN @entity1358 (P = 0.01 and P = 0.02, respectively). In multivariate analysis, only the distance of the tube tip to the @entity267 remained significantly associated with ST endothelial cell loss. CONCLUSIONS: Although this was a retrospective study with inherent limitations, tubes that are closer to the @entity267 seem to lead to increased loss of adjacent endothelial cells.

Effect of @entity726 tube shunt parameters on @entity267 endothelial cells in XXXX with ahmed valve implants.

@entity1 :: ('9606', 'Species') :: ['participants', 'patients'] @entity267 :: ('MESH:D065306', 'Disease') :: ['cornea'] @entity726 :: ('MESH:D005901', 'Disease') :: ['glaucoma'] @entity1358 :: ('MESH:D002292', 'Disease') :: ['endothelial cell density', 'ECD'] @entity2687 :: ('MESH:D003316', 'Disease') :: ['corneal thickness in the ST cornea']
@entity1 :: (9606,Species) :: ['patients']
