: a surgical operation to reshape the cornea for correction of myopia, farsightedness, or astigmatism in which the surface layer of the cornea is separated to create a hinged flap providing access to the inner cornea where varying amounts of tissue are removed by an excimer laser
Examples of LASIK in a Sentence
Recent Examples on the Web
Researchers found that athletes who have had LASIK surgery are especially prone to in-competition optical irregularities.
—
Brad Stulberg, Outside, 26 Mar. 2026
Services include cataract surgery, LASIK and refractive surgery, glaucoma management, retinal and vitreous care, corneal transplants, oculoplastic surgery, neuro-ophthalmology and pediatric ophthalmology.
—Community's Choice Awards, Oklahoman, 7 Mar. 2026
Expanding on this mission, the channel will include all aspects of eye surgery, including cataract surgery, vision correction surgery encompassing LASIK, implantable contact lenses, and lens exchange, as well as retinal and glaucoma surgery.
—Lyssanoel Frater, USA Today, 2 Mar. 2026
But the concern may also be a good reason to discuss vision correction surgery with your doctor, said Dr. Ashley Brissette, an ophthalmologist at Kelly Vision, a LASIK and cataract surgery center in New York City.
—Kristen Rogers, CNN Money, 10 Jan. 2026
The new technique could also be more affordable for clinics and regions priced out of LASIK.
—Meghie Rodrigues, IEEE Spectrum, 2 Sep. 2025
These procedures differ in terms of pain/discomfort (PRK can be quite painful, LASIK is painless) and in terms of recovery time (LASIK is very fast, PRK is much slower).
—Ethan Siegel, Big Think, 19 Aug. 2025
For those who want do do away with corrective lenses, the main option is LASIK (Laser-Assisted In Situ Keratomileusis) surgery, which uses a laser to reshape the cornea by removing microscopic amounts of tissue beneath a thin flap, allowing light to focus properly on the retina.
—New Atlas, 19 Aug. 2025
Postsurgical injury to the flaps created during LASIK may occur.
—Heather Jones Published, Verywell Health, 28 June 2025
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Brad Stulberg, Outside, 26 Mar. 2026
Services include cataract surgery, LASIK and refractive surgery, glaucoma management, retinal and vitreous care, corneal transplants, oculoplastic surgery, neuro-ophthalmology and pediatric ophthalmology.
—Community's Choice Awards, Oklahoman, 7 Mar. 2026
Expanding on this mission, the channel will include all aspects of eye surgery, including cataract surgery, vision correction surgery encompassing LASIK, implantable contact lenses, and lens exchange, as well as retinal and glaucoma surgery.
—Lyssanoel Frater, USA Today, 2 Mar. 2026
But the concern may also be a good reason to discuss vision correction surgery with your doctor, said Dr. Ashley Brissette, an ophthalmologist at Kelly Vision, a LASIK and cataract surgery center in New York City.
—Kristen Rogers, CNN Money, 10 Jan. 2026
The new technique could also be more affordable for clinics and regions priced out of LASIK.
—Meghie Rodrigues, IEEE Spectrum, 2 Sep. 2025
These procedures differ in terms of pain/discomfort (PRK can be quite painful, LASIK is painless) and in terms of recovery time (LASIK is very fast, PRK is much slower).
—Ethan Siegel, Big Think, 19 Aug. 2025
For those who want do do away with corrective lenses, the main option is LASIK (Laser-Assisted In Situ Keratomileusis) surgery, which uses a laser to reshape the cornea by removing microscopic amounts of tissue beneath a thin flap, allowing light to focus properly on the retina.
—New Atlas, 19 Aug. 2025
Postsurgical injury to the flaps created during LASIK may occur.
—Heather Jones Published, Verywell Health, 28 June 2025
Cite this Entry
“LASIK.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/LASIK. Accessed 1 Apr. 2026.
Copy CitationMedical Definition
LASIK
noun
LA·SIK
ˈlā-sik 
: a surgical operation to reshape the cornea for correction of nearsightedness, farsightedness, or astigmatism that involves the use of a microkeratome to separate the surface layer of the cornea creating a hinged flap providing access to the inner cornea where varying degrees of tissue are removed by an excimer laser followed by replacement of the corneal flap
called also laser-assisted in-situ keratomileusis
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