I had Lasik last year and my eye doctor and surgeon recommended taking it - they say it helps with the dry eye that most Lasik patients get after the surgery.
I take Nordic Naturals brand Omega 3. You can buy it at Whole Foods or on Amazon. It's the only one I have found that TRULY does not smell or have any sort of aftertaste (or after-burp - belch!). The capsules are pretty large but very easy to swallow.
I use fish oil for dry eyes also (I use the Costco Kirkland brand), I swear it works. I've never had Lasik though.
I also take a multi--I guess I just feel like it gives me what I might be missing; Vitamin D (1000)--low levels; and magnesium (helps with chronic constipation).