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Inicio Archivos de la Sociedad Española de Oftalmología (English Edition) Visual acuity and endothelial cell density following Descemet membrane endotheli...
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Vol. 86. Issue 12.
Pages 395-401 (December 2011)
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Vol. 86. Issue 12.
Pages 395-401 (December 2011)
Original article
Visual acuity and endothelial cell density following Descemet membrane endothelial keratoplasty (DMEK)
Agudeza visual y densidad de células endoteliales tras queratoplastia endotelial de membrana de Descemet (DMEK)
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I. Dapenaa,f,g,h,
Corresponding author
isadapena@gmail.com

Corresponding authors.
, L. Dapenab,c, M. Dirisamera,f,g,h, L. Hamd,f,g,h, G.R.J. Mellesa,e,f,g,h,
Corresponding author
a Graduate in Medicine
b Graduate in Veterinary Sciences
c Ph.D. University of León
d Graduate in Health Sciences
e Ph.D. in Medicine
f Netherlands Institute for Innovative Ocular Surgery, Rotterdam, Netherlands
g Melles Cornea Clinic Rotterdam, Rotterdam, Netherlands
h Amnitrans EyeBank Rotterdam, Rotterdam, Netherlands
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Table 1. Exclusion criteria and results for DMEK at 1, 3 and 6 months.
Abstract
Purpose

To assess the clinical outcomes of DMEK in the first series of 120 eyes operated for the treatment of Fuchs endothelial dystrophy in terms of visual acuity and endothelial cell density.

Methods

The first 120 consecutive eyes that underwent DMEK (i.e. transplantation of an isolated donor Descemet membrane with its endothelium) were evaluated. In all eyes, the best corrected visual acuity (BCVA) before and at 1, 3 and 6 months after surgery, as well as the endothelial cell density (ECD) before and at 6 months were measured.

Results

In eyes with a functional DMEK graft and good visual potential (n=96), the BCVA was ≥20/40 (≥0.5) in 77% after 1 month, 92% after 3 months, and 95% after six months; ≥20/25 (≥0.8) in 50%, 63%, and 73% of the cases, and ≥20/20 (≥1.0) in 23%, 34%, and 45% of the cases at 1, 3, and 6 months, respectively. In this group, ECD averaged 2610 (±185)cells/mm2 before, and 1770 (±520)cells/mm2 at six months after surgery (n=96). In 15 eyes, a secondary Descemet stripping endothelial keratoplasty (DSEK) was performed. In this group, 91% of patients reached a BCVA of ≥20/40 (≥0.5) and only one patient achieved a BCVA of 0.8 at 6 months after surgery (n=11). Furthermore, ECD averaged 2580 (±185)cells/mm2 before and 1310 (±740)cells/mm2 at six months (n=13).

Conclusion

DMEK provides a fast and high visual rehabilitation. Endothelial cell density loss may be similar to earlier types of endothelial keratoplasty.

Keywords:
Descemet membrane endothelial keratoplasty
Posterior lamellar keratoplasty
Corneal transplantation
Descemet membrane
Endothelium
Visual acuity
Endothelial cell density
Resumen
Objetivo

Evaluación de los resultados visuales y de la densidad de células endoteliales en los 120 primeros ojos sometidos a queratoplastia endotelial de membrana de Descemet (DMEK) como tratamiento para la distrofia endotelial de Fuchs.

Material y métodos

Se evaluaron los primeros 120 ojos sometidos a DMEK. En todos ellos se midió la agudeza visual mejor corregida (AVMC) antes y al 1, 3 y 6 meses después de la cirugía, así como la densidad celular endotelial (DCE) antes y a los 6 meses.

Resultados

En los ojos con trasplante exitoso y sin patologías concomitantes (n=96), se observó una AVMC ≥0,5 en el 77% de los casos al mes de la cirugía, en el 92% a los 3 meses y en el 95% a los 6 meses. La AVMC fue ≥0,8 en el 50%, 63% y 73% de los casos y ≥1,0 en el 23%, 34% y 45% al 1, 3 y 6 meses después de la cirugía, respectivamente. La DCE preoperatoria fue 2.610 (±185) células/mm2 y 1.770 (±520) células/mm2 a los 6 meses postcirugía. En quince ojos se realizó una queratoplastia endotelial con pelado de la membrana de Descemet (DSEK) secundaria. En este grupo, el 91% de los pacientes alcanzó una AVMC ≥0,5, alcanzando solo uno de ellos una AVMC de 0,8 (n=11) a los 6 meses. Además, la DCE media fue de 2.580 (±185) células/mm2 antes y de 1.310 (±740) células/mm2 a los 6 meses de la operación (n=13).

Conclusiones

DMEK permite una rápida y casi completa rehabilitación visual. La DCE postoperatoria observada es comparable al obtenido con técnicas precedentes de queratoplastia endotelial.

Palabras clave:
Queratoplastia endotelial de membrana de Descemet
Queratoplastia lamelar posterior
Trasplante corneal
Membrana de Descemet
Endotelio
Agudeza visual
Densidad celular endotelial

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