Firstly, structural components of the surgical system, its functional characteristics and the surgery process are introduced briefly.
文中首先简要地介绍了手术系统的结构组成、功能特点，以及手术的实现过程。
2
The best corrected visual acuity (BCVA) and macular structural changes were observed before the surgery, and at 1, 2, 3, 4, 8 months after the surgery.