(SUN-SENTINEL) — U.S. health regulators warned five eyecare providers to stop misleading advertising and promotion of refractive lasers used in eye surgery procedures such as LASIK.

The U.S. Food and Drug Administration found that the advertisements and promotional materials did not offer consumers adequate information about risks and possible side effects.

Warning letters were sent to certain eyecare centers in Indiana, California, Florida, Texas and Georgia.

“Providers whose advertising does not provide adequate risk information are finding out today that the FDA is serious about consumer protection,” said Steve Silverman, compliance director at FDA’s Center for Devices and Radiological Health in a statement posted on the agency’s website.

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