Dry Eye Causing Light Sensitivity After Lasik?

Dryness of your eyes could be a cause of the ligth sensitivity you are experiencing, but it could also be the result of some slight swelling remaining. It would be a good idea  to see your surgeon again, because the treatment of dryness and swelling are different. So that you can relax a bit, both dryness and swelling will go away, but sometimes using a steroid drop for a week or so can help speed that along. In my opinion,  postoperative swelling is more typically the cause of the glare and halos you are describing. Again, these symptoms will go away with time, but perhaps your doctor should know about this.

Your light sensitivity (known as "photophobia" by doctors) may be caused by dryness.  It might also be caused by microscopic swelling in the cornea, known as corneal edema, or by inflammation in the cornea or rarely after LASIK inside the eye itself.  Photophobia is more common with femtosecond-laser created flaps ("all-laser LASIK" using the IntraLase or similar lasers) than it is with blade-created flaps.  Femtosecond laser-associated Transient Light Sensitivity (TLS) is relatively common and is thought to be due to inflammation within the cornea.  TLS is generally self-limited and resolves on its own, but may be treated with a longer course of steroid anti-inflammatory eyedrops.

Your surgeon should be able to determine the cause of your photophobia and recommend the proper treatment course.