Follow-Up: I have hooding which may be caused by orbital fat loss. Does sulcus appear to be hollow? Can it be corrected?

Thanks for your question and for posting a photo. 
The hooding that you point out seems to be due to upper lid skin excess- known as dermatochalasis. This is commonly seen as one ages. The optimal treatment is an upper lid blepharoplasty which can remove excess skin, and is done quite easily in the office under local anesthesia. Fat can sometimes be removed as well, though I personally tend to avoid it unless necessary so as to not cause a hollowing out of the upper lid. Fillers or fat injection are sometimes offered as well to add volume to the upper lid in cases of hollowing. 
Seeing a board certified or board eligible plastic surgeon, facial plastic surgeon, or oculoplastic surgeon will allow a full evaluation. Being evaluated for ptosis and the integrity of the levator muscle- which lifts up your upper lid- is important prior to embarking on upper eyelid surgery. 
Best wishes, 
Rohit Jaiswal, MD   Plastic Surgeon 

Yes, it appears the main problem you have is upper eyelid hollowness with skin laxity due to deflation effect. See following link for examples of filler injection to treat the same problem. Skype consult available.

You have excess upper eyelid skin and volume deficiency in the sulcus above the upper lids.  The skin can easily be treated with an upper lid blepharoplasty and volume can be added along the orbital rim with fat grafting or injectable fillers.  Alternatively you could also tighten the skin with laser, thermi, microneedling.  Best Regards, Dr. Weiss