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Cet abstract a été assigné à session AOB: Academia Ophthalmologica Belgica
TitreOutcomes after 6 year follow up, retrospective study of corneal collagen cross linking in corneal ectasia.
Abstract Nr.1021
ButTo assess the long term effects of corneal cross linking (CXL) and possible prediction factors.
MéthodesProspective, nonrandomized study. 273 eyes of 213 patients with progressive keratoconus (n=210) and post Lasik ectasia (n=3) were included and treated with CXL at the University Hospital Maastricht from 2007 until 2014. Refraction, best corrected visual acuity (BCVA), corneal topography, pachymetry and endothelial cell density were performed at baseline and at 1, 3, 6 and 12 months, and yearly thereafter for 6 years.
RésultatsThe mean preoperative age was 29±10 years. The mean follow up period was 21±18 months. The steep keratometric value (preoperative: 50.2±5.1D) decreased significant after CXL to 49.6±4.7D and 48.1±5.4D after 1 (n=165) and 5 years (n=15), respectively. The mean keratometric value (kmean) (preoperative: 48.3±4.9D) decreased significantly after CXL to 47.7±4.85D and 45.9±4.7D after 1 (n=161) and 5 years (n=14), respectively. The BCVA improved significantly (>1line) in 83.3% (120 eyes of 144 eyes) in the first year and stabilized thereafter. Linear mixed model analysis (LMMA) demonstrated that higher preoperative Kmean was correlated with a the stronger flattening of the cornea. Secondly, a LMMA showed that the more severe preoperative LogBCVA, the more visual improvement after CXL was seen. After one year 18 eyes showed progression (11.5%). None of these patients were treated for a second time.
ConclusionRetrospective long term follow up data showed the efficacy of the procedure in reducing the keratometric values and visual improvement. The preoperative value of Kmean and Logmar BCVA are predictive factors for the change of Kmean and Logmar BCVA in time.
Auteur 1
NomAyvaz
InitialesA
InstitutUniversity Eye Clinic Maastricht (UECM)
VilleMaastricht
Auteur 2
NomSaelens
InitialesIEY
InstitutUECM
VilleMaastricht
Auteur 3
NomBerendschot
InitialesTTJM
InstitutUECM
VilleMaastricht
Auteur 4
NomDickman
InitialesMM
InstitutUECM
VilleMaastricht
Auteur 5
NomVisser
InitialesN
InstitutUECM
VilleMaastricht
Auteur 6
NomNuijts
InitialesRMMA
InstitutUECM
VilleMaastricht
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