In the second year of my double eyelid surgery, one side came loose.

I had double eyelid surgery two years ago and my right eye has been in critical condition and is finally on the verge of coming loose. The left eye is pretty, but the stress on my eye is so bad, so I contacted the director again and he told me to get another surgery. He said that if I just do one side, the left eye that is doing well now will come loose soon too, so he wants me to do both for 500,000 won. Is that okay? Two years ago, I had a partial incision, but I am worried that I will have to do it completely incision this time or if it will really not come loose if I do it...