The influence of speed during stripping in descemet membrane endothelial keratoplasty tissue preparation

Davide Borroni

Research output: Contribution to conferenceAbstractpeer-review

Abstract

To evaluate whether the speed of stripping a Descemet membrane endothelial keratoplasty graft influences the graft scroll width. Human corneas suitable for research were selected for the study. Pairs of corneas were randomly divided into 2 groups: 1 cornea was stripped with a slow speed (group 1) and the contralateral with a fast speed (group 2). Slow speed was defined as the total time greater than 150 seconds or speed <0.057 mm/s. Fast peeling was defined as less than 75 seconds or speed >0.11 mm/s. The grafts acquired were evaluated by microscopy for the graft scroll width and endothelial cell density change pre- and post-preparation. Twenty corneas of 10 donors were included in the analysis. The mean donor age was 68.6 ± 7.58 years. The mean total time of the tissue preparation in group 1 was 282.7 ± 28 seconds and in group 2 was 126 ± 50 seconds (P-value = 0.00000047). The mean speed of stripping in group 1 was 0.045 ± 0.006 mm/s and in group 2 was 0.266 ± 0.093 mm/s (P-value = 0.000027). The graft width in group 1 was 6.4 ± 0.92 mm and in group 2 was 2.87 ± 0.32 mm (P-value = 0.00000014). The mean endothelial cell loss in group 1 was 389 ± 149 cells/mm and in group 2 was 186 ± 63.44 cells/mm (P-value = 0.00134). We found a correlation between the speed of stripping, scroll width, and endothelial cell loss. Slow-peeled Descemet membrane endothelial keratoplasty grafts result in a wider scroll width but were associated with a greater reduction in endothelial cell density.
Original languageEnglish
Pages448
Publication statusPublished - 24 Mar 2021
Externally publishedYes
EventRSU Research week 2021: Knowledge for Use in Practice - Rīga, Latvia
Duration: 24 Mar 202126 Mar 2021
https://rw2021.rsu.lv/conferences/knowledge-use-practice

Conference

ConferenceRSU Research week 2021: Knowledge for Use in Practice
Abbreviated titleRW2021
CountryLatvia
CityRīga
Period24/03/2126/03/21
Internet address

Field of Science

  • 3.1 Basic medicine

Publication Type

  • 3.4. Other publications in conference proceedings (including local)

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