DSAEK increasing in use in German clinics

Article

Developed by US ophthalmologists, the surgical procedure DSAEK (Descemet's Stripping Automated Endothelial Keratoplasty) is increasingly being employed in German eye clinics too.

Developed by US ophthalmologists, the surgical procedure DSAEK (Descemet's Stripping Automated Endothelial Keratoplasty) is increasingly being employed in German eye clinics too. “We transplant a layer of the cornea measuring only 100 to 200 micrometers in thickness, which consists of parts of the stromal layer and the endothelium. It is a thin layer of cells, which is inserted onto the back surface of the cornea separating the cornea from the fluid in the anterior chamber of the eye, ” explains Professor Dr med. Friedrich E. Kruse, Chairman of the Department of Ophthalmology, Friedrich-Alexander University of Erlangen- Nuremberg, Germany. The endothelial cell layer is harvested by means of an automated precision knife, the microkeratome, from the donor cornea. After the operating surgeon has removed the diseased endothelial layer from the recipient cornea, the fine lamella from the donor is inserted into the eye chamber through a small incision made next to the cornea. The surgeon places the lamella on the inner side of the cornea.

This new procedure is suitable for those patients who suffer from corneal clouding caused by diseased endothelium. That is the case for some 40%. “The proportion of endothelium in the cornea is minimal. It is not therefore necessary the replace the entire cornea, ” says Kruse.

To ensure that the new endothelial layer sticks to the cornea, the surgeon injects an air bubble into the eye chamber after transplantation. To keep this in position, patients must remain lying on their backs in bed for two days. “In total, the recovery phase, however, is notably shorter than that after a conventional corneal transplant, ” Kruse explains in the run-up to WOC 2010. “It mostly takes 18 months before patients are able to see again properly. With DSAEK, however, it generally takes only several weeks to a few months.”

DMEK (Descemet's Membrane Endothelial Keratoplasty) is a further development of DSAEK. Here, the surgeon only grafts the Descemet's membrane and the endothelium, i.e. a ten micrometer thick layer. Results of the first 100 patients who underwent surgery with this procedure show that visual acuity is noticeably better than after DSAEK. However, this technique is more complicated, according to Kruse.

After a conventional transplant, there are often irregularities in the curvature of the cornea. “This astigmatism leads to patients having to wear eyeglasses or contact lenses. With DSAEK or DMEK we have been able to minimize this problem markedly, ” reports Kruse. He and his colleagues will be discussing the current results of both operative procedures at WOC 2010.

Newsletter

Join ophthalmologists across Europe—sign up for exclusive updates and innovations in surgical techniques and clinical care.

Recent Videos
Christine Curcio, PhD, of the University of Alabama at Birmingham Heersink School of Medicine, shares histology update and revised nomenclature for OCT with Sheryl Stevenson of the Eye Care Network and Ophthalmology Times
SriniVas R. Sadda, MD, FARVO, shares key points from his retina presentation at the International SPECTRALIS Symposium
Robert Sergott, MD, describes fluorescence lifetime imaging ophthalmoscopy (FLIO) and the International SPECTRALIS Symposium – And Beyond (ISS) in Heidelberg, Germany.
Rayaz Malik, MBChB, PhD, a professor of medicine at Weill Cornell Medicine - Qatar, spoke with Ophthalmology Times Europe about his presentation. It's titled "An eye on neurodegenerative diseases: Challenging the dogma" at the International SPECTRALIS Sympsoium. In conversation with Hattie Hayes, Ophthalmology Times Europe
Anat Loewenstein, MD, describes her presentation on remote imaging for age-related macular degeneration and geographic atrophy at the International SPECTRALIS Symposium, in conversation with Hattie Hayes of Ophthalmology Times Europe
Tyson Brunstetter, OD, PhD, a US Navy Aerospace Optometrist at the NASA Johnson Space Center in Houston, Texas, shares key takeaways from his keynote at the International SPECTRALIS Symposium (ISS)
Rayaz Malik, MBChB, PhD, shares his presentation, titled An eye on neurodegenerative diseases: Challenging the dogma, at this year's International SPECTRALIS Symposium
At the Retina World Congress, Siegfried Priglinger, MD, speaks about ensuring the best outcomes for preschool-aged patients
At the 2025 ASCRS meeting, Robert Ang, MD said small aperture IOLs can benefit all patients, especially those with complex corneas or who have undergone previous corneal refractive surgery
Viha Vig, MBChB graduate student at the University of Auckland, New Zealand, discusses her poster presentation on the relationship between mitochondiral disease, Alzheimer disease, and other types of dementia.
© 2025 MJH Life Sciences

All rights reserved.