Thank you for your question about eye bags treatment.It is probable fat, not fluid - but an in-person consultation is necessary to make an exact determination.To be sure, see two or more licensed and board-certified providers in your area for a complete evaluation to make sure you are a good candidate and that it is safe for you to have these treatments.I hope this helps.
At the lower eyelid we all have 3 fat pads, between the lower orbital floor and the eyeball, the inner one is like a pea in size and shape, the medial one like a bean and the outer one like a chickpea. Do push in your eyeball (with that eyelid closed, of course) and you'll be able to identify perfectly the above mentioned 3 elements.The best option is the scar-less transconjunctival blepharoplasty.