Comparison of Long-term Clinical Outcomes between Descemet’s Stripping Automated Endothelial Keratoplasty and Penetrating Keratoplasty in Patients with Bullous Keratopathy
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Purpose: To compare 2-year clinical outcomes of Descemet’s stripping automated endothelial keratoplasty(DSAEK) and penetrating keratoplasty (PK) in patients with bullous keratopathy. Methods: A retrospective chart review was performed to obtain 2 years of follow-up data of DSAEK or PK at asingle center from March 2009 to September 2012. The study comprised 15 eyes of DSAEK and 11 eyes ofPK. Outcome measures included best-corrected visual acuity (BCVA), spherical and keratometric changes,central corneal thickness, endothelial cell density, intraocular pressure, and postoperative complications. Graftsurvival rate was assessed by Kaplan-Meier survival analysis. Results: There were no differences in patient baseline characteristics between the two groups. At postoperative2 years, better BCVA of 0.69 ± 0.51 logarithm of the minimum angle of resolution (logMAR) was foundafter DSAEK compared to 0.88 ± 0.48 logMAR after PK. Refractive cylinder in DSAEK and PK was -2.60 ±1.53 and -6.00 ± 1.05 diopters (D), respectively, and keratometric cylinder was 3.27 ± 3.70 and 6.34 ± 3.51 D,respectively, at postoperative 2 years. The difference of mean spherical equivalents between postoperative 1month and 2 years was 0.84 D after DSAEK and 2.05 D after PK. A hyperopic shift of 1.17 D was present after2 years of DSAEK. The mean endothelial cell density at postoperative 2 years was 1,548 ± 456 cells/mm2 forDSAEK and 1,052 ± 567 cells/mm² for PK, with a cell loss of 19.96% vs. 52.38%, respectively when comparedto postoperative 1 month. No significant difference in central corneal thickness was found between DSAEKand PK (592 ± 75 vs. 563 ± 90 μm, respectively). Finally, the 2-year survival rate did not differ significantly betweenDSAEK and PK (93.3% vs. 81.8%, respectively, p = 0.344). Conclusions: Compared to PK, DSAEK provided more stable refractive errors with better visual outcome, lowerendothelial cell loss, and a lower rate of graft rejection at postoperative 2 years in patients with bullous keratopathy.
Abstract
Purpose: To compare 2-year clinical outcomes of Descemet’s stripping automated endothelial keratoplasty(DSAEK) and penetrating keratoplasty (PK) in patients with bullous keratopathy. Methods: A retrospective chart review was performed to obtain 2 years of follow-up data of DSAEK or PK at asingle center from March 2009 to September 2012. The study comprised 15 eyes of DSAEK and 11 eyes ofPK. Outcome measures included best-corrected visual acuity (BCVA), spherical and keratometric changes,central corneal thickness, endothelial cell density, intraocular pressure, and postoperative complications. Graftsurvival rate was assessed by Kaplan-Meier survival analysis. Results: There were no differences in patient baseline characteristics between the two groups. At postoperative2 years, better BCVA of 0.69 ± 0.51 logarithm of the minimum angle of resolution (logMAR) was foundafter DSAEK compared to 0.88 ± 0.48 logMAR after PK. Refractive cylinder in DSAEK and PK was -2.60 ±1.53 and -6.00 ± 1.05 diopters (D), respectively, and keratometric cylinder was 3.27 ± 3.70 and 6.34 ± 3.51 D,respectively, at postoperative 2 years. The difference of mean spherical equivalents between postoperative 1month and 2 years was 0.84 D after DSAEK and 2.05 D after PK. A hyperopic shift of 1.17 D was present after2 years of DSAEK. The mean endothelial cell density at postoperative 2 years was 1,548 ± 456 cells/mm2 forDSAEK and 1,052 ± 567 cells/mm² for PK, with a cell loss of 19.96% vs. 52.38%, respectively when comparedto postoperative 1 month. No significant difference in central corneal thickness was found between DSAEKand PK (592 ± 75 vs. 563 ± 90 μm, respectively). Finally, the 2-year survival rate did not differ significantly betweenDSAEK and PK (93.3% vs. 81.8%, respectively, p = 0.344). Conclusions: Compared to PK, DSAEK provided more stable refractive errors with better visual outcome, lowerendothelial cell loss, and a lower rate of graft rejection at postoperative 2 years in patients with bullous keratopathy.
참고문헌 (14)
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