Hello as per ur reports ur vit. B12 LEVELS Are mildly less...u can improve ur diet and take tablets for the same...there is no corelation between sinking of ur eyeball and low vitamin B12 levels

For milder cases of vitamin B-12 deficiency, treatment may involve changes to your diet and vitamin B-12 supplements in pill form or as a nasal spray. Your doctor may suggest vitamin B-12 injections, particularly if your vitamin B-12 deficiency is severe. At first, you may receive the shots as often as every other day. Eventually, you'll need injections just once a month, which may continue for life, depending on your situation...consult nearest physician they will do the needful.