I am curious if contacts build protein, how does lasik eye surgery work?

Reshaping the cornea: Lasik eye surgery is using excimer laser to reshape the corneal curvature of the eye to achieve the desire focusing power. A corneal flap is first made and lifted from the eye. Then based on the pre-operative calculation by a computer program, a pre-determined amount of the corneal tissue (the stroma) is removed by the laser beam. The flap is then placed back down on the eye.

The 2 are not relate: Contacts do not build protein. Perhaps you meant that protein deposits can build up on contacts and decrease their comfort and safety. Lasik surgery is unrelated to contacts and works by reshaping the cornea of your eye to correct your prescription.