I'm exploring options to improve the look of my left eye. I was born with microphthalmia and have worn a series of scleral shells since infancy. I am happy with my current shell, which fits well and was crafted using digital iris-matching technology by a well regarded ocularist in CA. I've had a brow lift, and would like to address the deep under-eye trough. I've been advised that fat grafting is a good option for even, long-term results. What are related risks, costs, and recovery times? I'm 29.