I am wondering if the under eye swelling and sinus pressure are related and indeed if it could be something other than infection and if I CT scan will be of help to solving the issue of either or both. It sounds like your symptoms have been quite bothersome for some time and you should discuss them with your physician.
Cordovan is an equine leather made from the fibrous flat muscle (or shell) beneath the hide on the rump of the horse. The leather derives its name from the city of Cordoba, Spain, where it was originally prepared by the Moors.
Top Grain. Top-grain leather means leather that has been made from the top or outermost layer of cowhide. Full-grain leather is a top-grain leather that shows all its natural grain and is the most natural. If labeled as top-grain but not full-grain, the leather may be sanded or buffed out to reduce blemishes. It is not as processed as some other forms of leather, however. Top-grain leather is soft and shows natural character.