Vernetzung+PRK - englische Studie veröffentlicht

Markus · Post by **Markus** » 2006-09-15, 00:31

Hallo zusammen!

Ich bekomme regelmäßig einen Newsletter von der http://www.osnsupersite.com
Einer Webseite rund um Augenoperationen. (Ocular Surgery Site = Augenoperations-Seiten)

Und dort wurde gerade ein Bericht veröffentlicht zu einer Londoner Studie von John Kanellopoulos, MD zum Thema Vernetzung mit anschliessender PRK (Laserbehandlung)

"Limited PRK feasible in keratoconus patients following UVA corneal cross-linking"
http://www.osnsupersite.com/view.asp?rID=18394

Allerdings müsst ihr euch dort registrieren um den Text zu lesen. Geht aber ganz schnell und ist umsonst.

VG MARKUS

Sajeev · Post by **Sajeev** » 2006-09-15, 02:27

Thanks a lot Markus! I copy the summary of the study below...

ABSTRACT:Top Story 9/13/2006

Limited PRK feasible in keratoconus patients following UVA corneal cross-linking

LONDON — Cross-linking of corneal collagen using ultraviolet-A radiation, followed by topography-guided PRK, can effectively improve vision in patients with keratoconus and post-LASIK ectasia, according to a surgeon speaking here.

"Collagen cross-linking is a rapidly growing practice in refractive surgery. It needs caution, but results are rewarding," John Kanellopoulos, MD, said in a presentation at the European Society of Cataract and Refractive Surgeons annual meeting. "We now have the experience of a considerable number of cases of both keratoconus and corneal ectasia that were effectively treated with this modality."

At 16 months' follow-up, corneal ectasia had stabilized in all cases, and corneal flattening was obtained in proportion to cone size, for an average of 3 D. Some eyes also obtained a reduction in spherical equivalent, and the procedure caused no changes in endothelial cells, Dr. Kanellopoulos said.

In 27 eyes with keratoconus, the ultraviolet-A (UVA) collagen cross-linking treatment was followed by limited topography-guided ablations to enhance visual rehabilitation. Several eyes with post-LASIK ectasia were similarly treated. For both conditions, patients experienced a considerable improvement in vision, he said.

"In one patient with post-LASIK ectasia and Intacs segment implants (Addition Technology), [uncorrected visual acuity] was 20/400. We removed the Intacs and performed the UVA treatment, obtaining a visual acuity of 20/80. Following topography-guided treatment, 12 months postop, the patient had achieved 20/20," Dr. Kanellopoulos said.

This case series shows that UVA corneal cross-linking can be used as a pre-treatment to enable ectatic corneas to undergo a limited 50-µm treatment with topography guided PRK, which would be otherwise contraindicated, he noted.

"Our therapeutic goal was not emmetropia, but improved best spectacle corrected visual acuity. Some of these patients now wear soft contact lenses or glasses," Dr. Kanellopoulos said.

This technique may be seen as a means for preventing the need for penetrating keratoplasty, he added.

Frank B · Post by **Frank B** » 2006-09-15, 09:57

Hallo Markus,
super Information von Dir!!!

Hello Sajeev,
thank you very much!!!

Viele Grüße, Frank

Silvia W · Post by **Silvia W** » 2006-09-15, 20:57

Hallo alle Zusammen,

ja langsam kommen doch vereinzelt Berichte zur Vernetzung und folgender PRK.
Bei Marc wurde letzte Woche eine PRK durchgeführt (Vernetzung vor 20 Monaten).
Einen aktuellen Bericht darüber habe ich unter der "Nach der Operation - Berichte und Behandlung" geschrieben, wenn es Neues (positv oder negativ) dazu gibt werde ich den Bericht ergänzen

Gruß

Silvia