What options do I have for Sunken and Dark circled eyes? (photos)

I appear to have sunken and dark eyes which I attribute to weight loss of around 100lbs. I'm Male, 28, I believe I have a good diet, I exercise regularly, all topical treatments are proving unsuccessful. My Dermatologist recommended "K-VIT by Sesderma" for treatment and two weeks later I've got no improvement yet this is for the undereyes only, the above have me concerned. I'm curious what options I have to restore my eyes with a permanent results. Thanks, Nick

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