The evaluation of clear corneal incision architecture using optical coherence tomography

incision used in modern-day phacoemulusification cataract surgery. CCI allows sutureless surgery, induces little astigmatism and provides fast visual rehabilitation1,2. Over the past decade the incidence of endophthalmitis after cataract surgery has increased. There has been much debate on whether the increasing use of clear cornea incision has contributed to this3-5. A recent study speculated that the integrity of CCIs in the postoperative period may be a critical factor in predicting endophthamitis6,7. This possibility has led to in vivo studies of the stability and architecture of these incisions8. Morphologic features of corneal incisions, such as the incision angle, square configuration and the enlargement of the small incision for IOLs implantation seem to be important factors in preventing transient gaping and poor edge apposition of the wound9. Incision gaping may allow bacteria to penetrate the anterior chamber through inversion of the intraocular pressure gradient10. The imaging technique of optical coherence tomography (OCT) can be used to examine the internal architecture of CCIs. The noncontact Cirrus OCT is quick and easy to use and safe for the patient. Recently, Torres et al.11 found that gaping of the endothelial edge and incomplete wound sealing in the early postoperative period tended to improve one month after surgery. The aim of our study, using the Cirrus OCT to examine CCIs, was to evaluate the evolution of CCIs 1 day, 7 days and 30 days after cataract surgery by measuring epithelial aperture, endothelial aperture, detachment of the Descemet, endothelial position lost, oedema, tissue separation, incision length, incision angle and incision planes.