Laser thermal keratoplasty is a surgical procedure used to improve vision by reshaping the cornea. However, there are other terms that can be used to describe this procedure. For example, the term laser-assisted subepithelial keratomileusis (LASEK) is used to describe a similar procedure that uses a laser to reshape the cornea. Another term that is often used interchangeably is photorefractive keratectomy (PRK), which involves using a laser to remove a thin layer of tissue from the cornea. Additionally, LASIK (laser-assisted in situ keratomileusis) is another term used for a similar procedure that creates a thin flap on the cornea before the laser is used to reshape it. Overall, these terms all refer to different variations of the same basic procedure.