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Effect of the position of the corneal lamella on the frequency of its detachment

International Journal of Ophthalmology(English edition) 2022年第12期15卷 1940-1943页

作者： Pavel Studeny Magdalena Netukova Martina Nemcokova Yun-Min Klimesova deli krizova Department of Ophthalmology University Hospital Kralovske Vinohrady and 3rd Faculty of MedicineCharles UniversityPrague 10034Czech Republic Eye Clinic SomichKarlovy Vary 36006Czech Republic

AIM:To determine the influence of gaps[places where neither the donor's nor the recipient's Descemet's membrane(DM)is present]and overlaps(places where the recipient's DM is covered by the donor's DM)on the frequency of postoperative detachment of DM endothelial keratoplasty(DMEK)***:Totally 64 eyes of 64 patients with Fuchs'endothelial dystrophy or bullous keratopathy indicated for DMEK were randomly divided in two *** diameter of the implanted DMEK lamella was the same in both groups(8 mm),but we changed the diameter of the removed recipient *** the first group(32 eyes),the circular area was approximately 8.5 mm(gaps);in the second group(32 eyes),the diameter was 7.5 mm(overlaps).Postoperatively we noted all cases of detachment visible on the slit lamp and these cases we indicated for *** also measured the uncorrected distance visual acuity(UDVA)as well as corrected distance visual acuity(CDVA)in decimal and postoperative endothelial cell density(ECD).The minimum follow-up time was ***:The number of rebubbling procedures in the entire group of patients was 13,i.e.,20.3%,with 6 eyes(18.7%)in the gap group,and 7 eyes(21.9%)in the overlap *** replacement(re-DMEK)was required in 3(gap group)and 2 patients(overlap group),*** dif ference between the groups was statistically *** UDVA was 0.54±0.21 in the gap group and 0.58±0.24 in the overlap *** CDVA was 0.74±0.22 and 0.80±0.16,*** was 1920±491 and 2149±570 cells/*** small differences between both groups were not statistically ***:We do not notice any difference in the group of patients with overlaps or gaps of *** presence of small areas of gaps or overlaps does not affect the frequency of detachment of the DMEK lamellae.

关键词： centrally positioned Descemet graft Descemet graf t detachment Descemet membrane endothelial keratoplasty posterior lamellar keratoplasty recovery of corneal transparency

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