Gone are the days when Lasik was a mysterious, untested procedure that might make your eyeballs explode a decade down the road.

Fifteen years in, the procedure — which improves vision by using a laser to reshape a patient's cornea — is as popular as it has ever been, and any vision plan worth its salt offers laser vision correction as part of its standard coverage: either through a discount or through an allowance for employees who wish to have the procedure.

"Post-Patient Protection and Affordable Care Act, employers are looking even more heavily toward being able to offer discounts and value-add program to their employees. Continuing to offer those programs are very important to the employer and to the broker," says Kevin Hilst, senior vice president of sales for EyeMed.