To evaluate the influence of preoperative graft thickness (GT) on final visual acuity and speed of vision recovery after Descemet stripping automated endothelial keratoplasty (DSAEK).
The best spectacle-corrected acuity (BSCVA) was measured after DSAEK was performed at 1, 3, 6, 12, and 24 months. A regression analysis was performed to determine whether GT predicted the BSCVA across each time gate. The time to achieve the “1-year maximum BSCVA” was determined to assess the “speed” of recovery for all eyes that had data at 1, 3, 6, and 12 months. Additionally, the final BSCVA was compared between 2 distinct groups of “thin” (<125-μm) versus “thick” (>165-μm) tissue.
There were 144 eyes evaluated. No significant correlations were found between the GT and the BSCVA at any of the time gates: 1, 3, 6, 12, or 24 months. Speed of vision recovery was not affected by the GT. The average GT values of the eyes that achieved BSCVA by 1, 3, 6 months and 1 year were not significantly different and were 154.7, 141.3, 149, and 150.1 μm, respectively. No difference was found between the BSCVA of “thick” versus “thin” tissues at any of the time gates: 1, 3, 6, or 12 months.
Preoperative GT measurements were not correlated with the BSCVA after the DSAEK was performed at 1, 6, 12, or 24 months postoperatively and do not determine the speed of vision recovery. Additionally, no difference was found in postoperative vision outcomes when directly comparing tissues at either end of the GT spectrum of this study.