Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty
Purpose. To evaluate changes in anterior, posterior, and total corneal astigmatism in patients after Descemet membrane endothelial keratoplasty (DMEK). Methods. We retrospectively included 29 eyes of 23 patients (age 67.6 ± 9.8 years, 13 female, 10 male) after DMEK surgery. The magnitude and axis or...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2017/4068963 |
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| author | Maged Alnawaiseh Lars Zumhagen André Rosentreter Nicole Eter |
| author_facet | Maged Alnawaiseh Lars Zumhagen André Rosentreter Nicole Eter |
| author_sort | Maged Alnawaiseh |
| collection | DOAJ |
| description | Purpose. To evaluate changes in anterior, posterior, and total corneal astigmatism in patients after Descemet membrane endothelial keratoplasty (DMEK). Methods. We retrospectively included 29 eyes of 23 patients (age 67.6 ± 9.8 years, 13 female, 10 male) after DMEK surgery. The magnitude and axis orientation of anterior, posterior, and total corneal astigmatism before and after DMEK were determined using a rotating Scheimpflug system (Pentacam HR, Oculus). Results. The magnitude of anterior, posterior, and total corneal astigmatism in the central cornea did not change significantly after surgery. Before surgery, we found a significant correlation between the magnitudes of anterior and posterior corneal astigmatism (Spearman’s correlation coefficient rS=0.526, P=0.003), while after surgery this correlation was no longer significant (rS=0.038, P=0.843). There was a significant correlation between the vector difference between preoperative and postoperative posterior astigmatism and the change in corneal pachymetry (rP=0.47, P=0.010). Conclusions. Posterior corneal astigmatism (especially the orientation) and therefore the relationship between anterior and total corneal astigmatism may change after DMEK. This should be considered to improve the accuracy of toric IOL power calculations following phakic DMEK or in combined procedures. |
| format | Article |
| id | doaj-art-44751eb9cf324c938c25bba901d082f8 |
| institution | Kabale University |
| issn | 2090-004X 2090-0058 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Ophthalmology |
| spelling | doaj-art-44751eb9cf324c938c25bba901d082f82025-02-03T01:02:28ZengWileyJournal of Ophthalmology2090-004X2090-00582017-01-01201710.1155/2017/40689634068963Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial KeratoplastyMaged Alnawaiseh0Lars Zumhagen1André Rosentreter2Nicole Eter3Department of Ophthalmology, University of Muenster Medical Center, Muenster, GermanyDepartment of Ophthalmology, University of Muenster Medical Center, Muenster, GermanyDepartment of Ophthalmology, University of Muenster Medical Center, Muenster, GermanyDepartment of Ophthalmology, University of Muenster Medical Center, Muenster, GermanyPurpose. To evaluate changes in anterior, posterior, and total corneal astigmatism in patients after Descemet membrane endothelial keratoplasty (DMEK). Methods. We retrospectively included 29 eyes of 23 patients (age 67.6 ± 9.8 years, 13 female, 10 male) after DMEK surgery. The magnitude and axis orientation of anterior, posterior, and total corneal astigmatism before and after DMEK were determined using a rotating Scheimpflug system (Pentacam HR, Oculus). Results. The magnitude of anterior, posterior, and total corneal astigmatism in the central cornea did not change significantly after surgery. Before surgery, we found a significant correlation between the magnitudes of anterior and posterior corneal astigmatism (Spearman’s correlation coefficient rS=0.526, P=0.003), while after surgery this correlation was no longer significant (rS=0.038, P=0.843). There was a significant correlation between the vector difference between preoperative and postoperative posterior astigmatism and the change in corneal pachymetry (rP=0.47, P=0.010). Conclusions. Posterior corneal astigmatism (especially the orientation) and therefore the relationship between anterior and total corneal astigmatism may change after DMEK. This should be considered to improve the accuracy of toric IOL power calculations following phakic DMEK or in combined procedures.http://dx.doi.org/10.1155/2017/4068963 |
| spellingShingle | Maged Alnawaiseh Lars Zumhagen André Rosentreter Nicole Eter Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty Journal of Ophthalmology |
| title | Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty |
| title_full | Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty |
| title_fullStr | Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty |
| title_full_unstemmed | Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty |
| title_short | Changes in Anterior, Posterior, and Total Corneal Astigmatism after Descemet Membrane Endothelial Keratoplasty |
| title_sort | changes in anterior posterior and total corneal astigmatism after descemet membrane endothelial keratoplasty |
| url | http://dx.doi.org/10.1155/2017/4068963 |
| work_keys_str_mv | AT magedalnawaiseh changesinanteriorposteriorandtotalcornealastigmatismafterdescemetmembraneendothelialkeratoplasty AT larszumhagen changesinanteriorposteriorandtotalcornealastigmatismafterdescemetmembraneendothelialkeratoplasty AT andrerosentreter changesinanteriorposteriorandtotalcornealastigmatismafterdescemetmembraneendothelialkeratoplasty AT nicoleeter changesinanteriorposteriorandtotalcornealastigmatismafterdescemetmembraneendothelialkeratoplasty |