Descemet membrane endothelial keratoplasty (DMEK) in phakic eyes with shallow anterior chamber

Siggel, Robert; Heindl, Ludwig M.; Cursiefen, Claus

doi:10.1007/s00417-014-2850-9

Cited by 19 publications

(11 citation statements)

References 10 publications

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“…12,13 When these patients develop clinically significant cataract post-DMEK, the changes on the posterior surface of the cornea need to be measured and incorporated in the IOL power calculations, so that these calculations take posterior corneal measurements into account instead of being based on SimKs (different anterior to posterior corneal surface relationship) ( Table 3). Our study was limited by a relatively small sample size and the retrospective design.…”

Section: Discussionmentioning

confidence: 99%

“…7 The improved postoperative visual outcome after DMEK, the growing popularity of DMEK, and the fact that DMEK can be performed in patients with concomitant, clinically significant cataract requiring simultaneous phacoemulsification and intraocular lens (IOL) implantation have made factors such as postoperative refractive outcome, refractive changes due to DMEK, and IOL power calculations for cataract extraction (before, during, and potentially after DMEK) the focus of increasing interest. 4,[8][9][10][11][12][13] In an attempt to evaluate refractive changes after DMEK with respect to their impact on IOL power calculations, we started an evaluation of patients undergoing DMEK by means of the Pentacam Scheimpflug imaging system (Oculus, Wetzlar, Germany).…”

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confidence: 99%

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Changes in Corneal Refractive Power for Patients With Fuchs Endothelial Dystrophy After DMEK

Alnawaiseh

Rosentreter

Eter

et al. 2016

Cornea

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Changes in Corneal Refractive Power for Patients With Fuchs Endothelial Dystrophy After DMEK

Alnawaiseh

Rosentreter

Eter

et al. 2016

Cornea

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“…Augen mit komplizierten anatomischen Verhältnissen der Vorderkammer (flache Vorderkammer, ausgedehnte Synechierungen, Vorhandensein von ableitenden Drainagesystemen oder Irisdefekten) sind i. d. R. für eine DSAEK aufgrund des steiferen Transplantats besser zugänglich [6,16,27,28]. Mit höherem Endothelzellverlust ist jedoch auch eine DMEK durchführbar [29]. Extraokuläre Entscheidungsgründe gegen eine posteriore lamelläre Keratoplastik sind z.…”

Section: Kontraindikationenunclassified

Update minimalinvasive lamelläre Keratoplastik: DMEK, DSAEK und DALK

Cursiefen

Schaub

Bachmann

2016

Klin Monatsbl Augenheilkd

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DMEK and DSAEK are now internationally the surgical methods of choice in patients with endothelial corneal pathologies, i.e. in Fuchs' Endothelial Dystrophy. The DALK technique for lamellar replacement of the anterior stroma, i.e. in keratoconus, needs further standardisation, so that DALK can in future be performed more often even in less specialised departments. Major advantages of lamellar keratoplasties are the very good results in visual outcome and fewer immune reactions or graft rejections. Even intraoperative complications are rare. In the long term, further strategies are desirable for the standardisation of lamellar keratoplasties and its establishment as the primary standard procedure.

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“…DMEK can be performed in phakic eyes with a clear lens without performing lens-surgery [ 10 , 11 ]. When these patients develop clinically significant cataract post DMEK, the changes on the posterior surface induced by surgery may be relevant for IOL power calculation.…”

Section: Introductionmentioning

confidence: 99%

Intraocular lens power calculation using standard formulas and ray tracing after DMEK in patients with Fuchs endothelial dystrophy

et al. 2017

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BackgroundThe study presented here aims to optimize the accuracy of intraocular lens (IOL) power calculations in patients after DMEK by evaluation of the impact of the altered anterior/posterior corneal curvature relationship.MethodsScheimpflug-based Oculus Pentacam imaging was performed after DMEK surgery for Fuchs endothelial dystrophy. The IOL power was calculated for all patients by ray tracing, aiming for postoperative emmetropia. We also performed the IOL calculation using four third-generation formulas (SRK-T, Hoffer-Q, Holladay-1 and Haigis). The residual refractions for the individual target IOL were compared and analyzed.ResultsThis retrospective study included 42 eyes of 33 patients (age 68.73 ± 10.11 years) after DMEK surgery. The differences between the expected residual refraction based on ray tracing and that predicted with the third-generation formulas were statistically significant (all formulas p < 0.001). The highest mean difference in the residual refraction between the target IOL measured by ray tracing and that calculated with third-generation formulas was found for the Haigis formula (0.90 ± 0.40 D), and the lowest mean difference for the SRK/T formula (0.73 ± 0.49 D).ConclusionsDMEK surgery induced a relevant change in the anterior to posterior corneal curvature relationship; this needs to be taken into account in the IOL power calculation to avoid hyperopic refractive surprises.

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Descemet membrane endothelial keratoplasty (DMEK) in phakic eyes with shallow anterior chamber

Cited by 19 publications

References 10 publications

Changes in Corneal Refractive Power for Patients With Fuchs Endothelial Dystrophy After DMEK

Changes in Corneal Refractive Power for Patients With Fuchs Endothelial Dystrophy After DMEK

Update minimalinvasive lamelläre Keratoplastik: DMEK, DSAEK und DALK

Intraocular lens power calculation using standard formulas and ray tracing after DMEK in patients with Fuchs endothelial dystrophy

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