Comparison of Changes in Tear-Film Function and Ocular Surface Stability After on-Axis Small-Incision Cataract Surgery: Prospective Clinical Trial
To evaluate the changes in corneal sensitivity, tear film function, and ocular surface stability in patients after on-axis small incision cataract surgery.
Forty eyes with with-the-rule (WTR) astigmatism and 40 eyes with against-the-rule (ATR) astigmatism were included in this study. Temporal clear corneal incisions were made in the ATR group and superior clear corneal incisions were made in the WTR group. Tear break-up time(BUT), Schirmer's score, corneal sensitivity, fluorscein stain score, rose bengal stain score and ocular surface disease index(OSDI) score were compared between 2 groups on postoperative 1week, 1 month, and 2 months after surgery.
Corneal astigmatism was reduced but there was no significance in both groups. BUT was significantly decreased and fluorescein stain score, rose bengal stain score, and OSDI score were significantly increased on 1 week postoperatively(p<0.05). These changes were recovered on 1 month and 2 months postoperatively. There were no differences between 2 groups.
There were no differences of effects on the tear and ocular surface between superior and temporal clear corneal incision.