Descemet Stripping Endothelial Keratoplasty for Fuchs' Endothelial Corneal Dystrophy

Five-Year Results of a Prospective Study

Katrin Wacker, Keith Baratz, Leo J. Maguire, Jay W. McLaren, Sanjay V. Patel

Research output: Contribution to journalArticle

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Abstract

To determine 5-year outcomes of Descemet stripping endothelial keratoplasty (DSEK) for Fuchs' endothelial corneal dystrophy (FECD). Design Prospective cohort study. Participants Fifty-two eyes of 45 subjects with FECD undergoing primary DSEK. Methods Subjects were examined before and at fixed intervals through 60 months after DSEK. At each visit, graft survival was determined by slit-lamp examination; best spectacle-corrected visual acuity (BSCVA) was measured using the electronic Early Treatment Diabetic Retinopathy Study (ETDRS) protocol; total anterior corneal higher-order aberrations (HOAs) were derived from corneal topography; and corneal backscatter, corneal thickness, and endothelial cell density were measured from confocal microscopy images. Corneal thickness also was measured by ultrasonic pachymetry. Changes after DSEK were analyzed using generalized estimating equation models. Main Outcome Measures Best-corrected visual acuity, HOAs, endothelial cell loss, corneal thickness, and corneal backscatter. Results Complete 60-month follow-up was possible in 34 eyes. Mean BSCVA ± standard deviation improved from 0.45 ± 0.19 logarithm of the minimum angle of resolution (logMAR) (Snellen equivalent, 20/56) before DSEK to 0.09 ± 0.13 logMAR (Snellen equivalent, 20/25) at 5 years (P <0.001). Between 1 and 5 years, BSCVA improved by 0.06 logMAR (or 3 ETDRS letters; 95% confidence interval, 0.05-0.07 logMAR) per year (P <0.001), and 56% of eyes were 0.1 logMAR (20/25) or better at 5 years. Graft thickness (approximately 155 μm) and corneal thickness (approximately 700 μm) did not change after surgery. Anterior corneal HOAs and backscatter decreased between 1 and 5 years (P ≤ 0.002). Six grafts failed, of which 4 were primary (iatrogenic); mean endothelial cell loss ± standard deviation was 55±15% at 5 years. Conclusions Between 1 and 5 years after DSEK, BSCVA continues to improve such that at 5 years, more than half of eyes see better than 20/25 with a mean total corneal thickness of 700 μm. Improvement in vision is accompanied by continued reduction in corneal haze and aberrations, suggesting ongoing remodeling of the cornea after restoration of endothelial function.

Original languageEnglish (US)
Pages (from-to)154-160
Number of pages7
JournalOphthalmology
Volume123
Issue number1
DOIs
StatePublished - Jan 1 2016

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Descemet Stripping Endothelial Keratoplasty
Fuchs' Endothelial Dystrophy
Visual Acuity
Prospective Studies
Diabetic Retinopathy
Corneal Endothelial Cell Loss
Endothelial Cells
Corneal Topography
Transplants
Graft Survival
Confocal Microscopy
Ultrasonics
Cornea
Cohort Studies
Cell Count
Outcome Assessment (Health Care)
Confidence Intervals
Therapeutics

ASJC Scopus subject areas

  • Ophthalmology

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Descemet Stripping Endothelial Keratoplasty for Fuchs' Endothelial Corneal Dystrophy : Five-Year Results of a Prospective Study. / Wacker, Katrin; Baratz, Keith; Maguire, Leo J.; McLaren, Jay W.; Patel, Sanjay V.

In: Ophthalmology, Vol. 123, No. 1, 01.01.2016, p. 154-160.

Research output: Contribution to journalArticle

Wacker, Katrin ; Baratz, Keith ; Maguire, Leo J. ; McLaren, Jay W. ; Patel, Sanjay V. / Descemet Stripping Endothelial Keratoplasty for Fuchs' Endothelial Corneal Dystrophy : Five-Year Results of a Prospective Study. In: Ophthalmology. 2016 ; Vol. 123, No. 1. pp. 154-160.
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abstract = "To determine 5-year outcomes of Descemet stripping endothelial keratoplasty (DSEK) for Fuchs' endothelial corneal dystrophy (FECD). Design Prospective cohort study. Participants Fifty-two eyes of 45 subjects with FECD undergoing primary DSEK. Methods Subjects were examined before and at fixed intervals through 60 months after DSEK. At each visit, graft survival was determined by slit-lamp examination; best spectacle-corrected visual acuity (BSCVA) was measured using the electronic Early Treatment Diabetic Retinopathy Study (ETDRS) protocol; total anterior corneal higher-order aberrations (HOAs) were derived from corneal topography; and corneal backscatter, corneal thickness, and endothelial cell density were measured from confocal microscopy images. Corneal thickness also was measured by ultrasonic pachymetry. Changes after DSEK were analyzed using generalized estimating equation models. Main Outcome Measures Best-corrected visual acuity, HOAs, endothelial cell loss, corneal thickness, and corneal backscatter. Results Complete 60-month follow-up was possible in 34 eyes. Mean BSCVA ± standard deviation improved from 0.45 ± 0.19 logarithm of the minimum angle of resolution (logMAR) (Snellen equivalent, 20/56) before DSEK to 0.09 ± 0.13 logMAR (Snellen equivalent, 20/25) at 5 years (P <0.001). Between 1 and 5 years, BSCVA improved by 0.06 logMAR (or 3 ETDRS letters; 95{\%} confidence interval, 0.05-0.07 logMAR) per year (P <0.001), and 56{\%} of eyes were 0.1 logMAR (20/25) or better at 5 years. Graft thickness (approximately 155 μm) and corneal thickness (approximately 700 μm) did not change after surgery. Anterior corneal HOAs and backscatter decreased between 1 and 5 years (P ≤ 0.002). Six grafts failed, of which 4 were primary (iatrogenic); mean endothelial cell loss ± standard deviation was 55±15{\%} at 5 years. Conclusions Between 1 and 5 years after DSEK, BSCVA continues to improve such that at 5 years, more than half of eyes see better than 20/25 with a mean total corneal thickness of 700 μm. Improvement in vision is accompanied by continued reduction in corneal haze and aberrations, suggesting ongoing remodeling of the cornea after restoration of endothelial function.",
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