Chuẩn bị cho phẫu thuật. Tiến hành thủ thuật bơm khí vào mắt. Hồi phục sau phẫu thuật. Sử dụng miếng dán và che mắt. Sử dụng thuốc nhỏ mắt.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Prior to any surgery, you will be given specific instructions to prepare for surgery. Common preparations for surgery include:  Abstaining from food and beverages for between two and eight hours before the operation  Using eye drops to dilate the pupils (if instructed to do so by your doctor) A pneumatic retinopexy involves your doctor injecting a bubble of air or gas into the vitreous cavity of your eye. The vitreous is the gelatinous material that helps keep the shape of the eye. The bubble sh