Abstract:
PURPOSE:To evaluate whether the visual, topographic, and endothelial cell count results observed 1 year after deep lamellar endothelial keratoplasty (DLEK) surgery remain stable up to 2 years after surgery. DESIGN:Prospective, noncomparative, interventional case series. PARTICIPANTS:Twenty eyes of 20 patients with corneal edema from Fuchs' endothelial dystrophy. METHODS:Deep lamellar endothelial keratoplasty endothelial replacement surgery, with a 9.0-mm or 9.5-mm scleral access incision and a specialized intrastromal trephine, was performed. Snellen visual acuities, corneal topography, and endothelial cell counts were prospectively measured preoperatively and 1 year and 2 years after DLEK. MAIN OUTCOME MEASURES:Uncorrected and best spectacle-corrected visual acuity (BSCVA), refractive and topographic astigmatism, mean corneal curvature, topographic regularity and symmetry, and endothelial cell density. RESULTS:At 1 year postoperatively, BSCVA averaged 20/50 (range, 20/25-20/200), spherical equivalents (SE) averaged -0.194+/-1.521 diopters (D), manifest refraction (MR) astigmatism averaged 2.04+/-1.05 D (range, 0.0-4.0 D), topographic astigmatism averaged 2.3+/-1.1 D, mean corneal curvature was 43.2+/-1.8 D, the surface regularity index (SRI) averaged 1.16+/-0.41, and the surface asymmetry index (SAI) averaged 1.05+/-1.09. At 2 years postoperatively, BSCVA averaged 20/48 (range, 20/25-20/200), SE averaged -0.369+/-1.267 D, MR astigmatism averaged 1.76+/-0.66 D (range, 0.75-3.0 D), topographic astigmatism averaged 2.4+/-1.1 D, mean corneal curvature was 43.6+/-1.8 D, the SRI averaged 1.13+/-0.44, and the SAI averaged 0.76+/-0.59. There was no significant change in visual or topographic parameters between 1 year and 2 years postoperatively (P>0.05). Endothelial cell counts averaged 2335+/-468 cells/mm(2) at 1 year and 2151+/-457 cells/mm(2) at 2 years postoperatively (P = 0.041). CONCLUSIONS:Deep lamellar endothelial keratoplasty provides stable refractions, corneal topography, and endothelial cell densities as long as 2 years after surgery. The absence of corneal sutures in this technique seems to prevent the sutures in/sutures out changes in SE refractions and corneal topography sometimes seen after penetrating keratoplasty (PK). Deep lamellar endothelial keratoplasty is, therefore, an excellent alternative to PK for patients with endothelial dystrophies.
journal_name
Ophthalmologyjournal_title
Ophthalmologyauthors
Ousley PJ,Terry MAdoi
10.1016/j.ophtha.2004.07.028subject
Has Abstractpub_date
2005-01-01 00:00:00pages
50-7issue
1eissn
0161-6420issn
1549-4713pii
S0161-6420(04)01271-0journal_volume
112pub_type
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