Laser Eye Surgery (LASIK)

Laser eye surgery is a form of refractive surgery, which means it corrects the way the eye focuses rather than treating a disease. A refractive error happens when the shape of the eye prevents light from landing precisely on the retina, producing blurred vision. By removing a microscopically thin, precisely mapped layer of corneal tissue with a cold excimer laser, the surgeon changes the curvature of the cornea so that focus is restored. In LASIK, the most widely performed method, a thin protective flap is created in the surface of the cornea, lifted aside, and the laser is applied to the layer beneath before the flap is gently laid back into place, where it seals without stitches. The result is a cornea reshaped to the patient's exact prescription, allowing clearer vision without glasses.

Laser eye surgery is considered by people who want to reduce or end their reliance on glasses and contact lenses for everyday life, work or sport. It is suited to low and moderate degrees of myopia (short-sightedness), hyperopia (long-sightedness) and astigmatism, and is most predictable when the prescription has been stable for at least a year. It is not a treatment for an eye disease, and a thorough assessment decides whether the eye is a good candidate. People with a very high prescription, an unusually thin or irregular cornea, certain corneal conditions or an unstable prescription may be better served by a lens-based procedure instead, which the eye surgeon will explain. The aim is always a safe, lasting result rather than treating every eye with the same method.

Treatment begins with numbing eye drops, so the eye feels nothing and no general anaesthesia is needed; the patient is awake and relaxed throughout. Several techniques fall under the umbrella of laser correction, and the surgeon chooses the one that fits the eye. In flap-based LASIK, a thin hinged flap is created with a femtosecond laser or fine instrument, folded back, and the excimer laser reshapes the cornea underneath before the flap is replaced. In surface methods such as PRK and no-touch TransPRK, the outermost layer is gently removed or treated directly by the laser without a flap, which can suit thinner or more active eyes. In every case the laser delivery itself lasts only seconds per eye, guided by the precise map taken during the assessment. The whole visit takes around 10 to 15 minutes for both eyes, after which a protective shield or contact lens may be placed briefly while the surface settles.

A good candidate is an adult, generally over eighteen, with a stable prescription, healthy eyes free of significant disease, and realistic expectations. Preparation centres on a detailed pre-operative examination that maps the shape and thickness of the cornea, measures the prescription, checks the tear film and screens for any condition that would make laser unwise. Contact lens wearers are usually asked to switch to glasses for a short period beforehand, because lenses temporarily change the corneal shape and could distort the measurements. For patients travelling from abroad, a recent eye report and prescription can be reviewed before the journey, but the definitive scans and the decision on the best method are completed in person, since the safety of the treatment depends on these precise on-site measurements.

Most people notice clearer vision within hours, and useful sight returns within a day, though it is normal for the eyes to feel gritty, watery or sensitive to light for the first day or two, especially with surface methods. Vision continues to sharpen and stabilise over the following weeks, and lubricating drops are used to keep the eyes comfortable during healing. When planning a trip abroad, it is sensible to allow about 3 to 5 days in the destination city so the surgeon can carry out the assessment, perform the laser and review the eyes at the first follow-up before clearance to fly. Air travel is generally comfortable once that check confirms healing is on track, although a dry cabin can make drops especially useful. After returning home, follow-up continues remotely by message or video, and international patient teams routinely provide interpreters and coordinators so language is never a barrier.

Performed by an experienced refractive surgeon after proper screening, laser eye surgery is one of the safest and most successful elective procedures in modern medicine, but no surgery is entirely without risk. Common early effects such as dry eyes, glare, halos around lights at night and mild fluctuation in vision are expected and usually fade as the cornea heals. Less common issues include under or over-correction that may need a small enhancement, flap-related concerns with LASIK, or infection, all of which are minimised by careful patient selection and aftercare. The great majority of suitable patients achieve clear vision that removes or greatly reduces the need for glasses for distance, with the corrected prescription remaining stable over the long term. Choosing a qualified surgeon, completing the full assessment and following the drop and review schedule are the keys to a safe experience and a lasting result.