Conventional multi-port laparoscopic surgery (CL) is now a standard approach to colorectal resections, due to it’s short-term benefits over conventional open surgery. In recent years, several studies
Interventions: ESD for colorectal tumors using conventional methods. ESD for colorectal tumors using the under water method. Primary outcome(s): Completion rate of under water ESD by non-expert Study
Purpose: To evaluate the accuracy of pre-operative biomicroscopy (BM), ultrasonography (US), and spectral domain optical coherence tomography (SD-OCT) for determining complete posterior vitreous detac