Laser eye correction: benefits, risks and what to expect
Laser eye correction is a safe and widely performed procedure aimed at reducing or eliminating the need for glasses or contact lenses.
In this guide, consultant ophthalmologist Mr Mario Saldanha explains how laser eye surgery works, outlines the different techniques available, discusses suitability, and highlights what patients can expect before, during and after treatment.
What is laser eye correction?
Laser eye correction refers to a group of procedures that reshape the cornea (the clear front surface of the eye) using a precise laser. By improving how light is focused onto the retina, vision can be significantly enhanced.
It is commonly used to treat:
- Short-sightedness (myopia).
- Long-sightedness (hyperopia).
- Astigmatism.
Types of laser eye surgery
Several laser eye surgery techniques are available, each tailored to different eye characteristics and patient needs.
LASIK (laser-assisted in situ keratomileusis)
LASIK is the most commonly performed form of laser eye surgery. A thin corneal flap is created, the underlying tissue is reshaped, and the flap is repositioned.
Advantages:
- Rapid visual recovery.
- Minimal discomfort.
- Highly predictable results.
LASEK (laser-assisted sub-epithelial keratectomy)
LASEK involves gently moving the outer corneal layer rather than creating a flap. It is often suitable for patients with thinner corneas.
Advantages:
- Preserves corneal tissue.
- Suitable for specific eye conditions.
PRK (photorefractive keratectomy)
PRK removes the outer corneal layer before reshaping the tissue beneath.
Advantages:
- No flap creation.
- Suitable for individuals at higher risk of eye trauma.
Am I suitable for laser eye correction?
Suitability for laser eye correction depends on several factors:
- Age (typically over 18).
- Stable vision prescription.
- Good overall eye health.
- Adequate corneal thickness.
Certain conditions, such as severe dry eye or advanced glaucoma, may make treatment unsuitable. A comprehensive consultation with an ophthalmologist is essential.
What happens during the procedure?
Laser eye surgery is usually performed as a day-case procedure and takes approximately 10–15 minutes per eye.
Anaesthetic eye drops are used to ensure comfort. Patients remain awake, and most report only mild pressure during the procedure. Vision may be blurred immediately afterwards but typically improves within a few days.
Recovery and aftercare
Following laser eye surgery, it is common to experience mild irritation or dryness in the eyes. Vision often begins to improve within 24–48 hours, particularly after LASIK, although this can vary slightly between individuals.
Longer-term care
During the healing period, prescribed eye drops are used to support recovery and reduce the risk of infection. Patients are advised to avoid rubbing their eyes and to attend all scheduled follow-up appointments to ensure appropriate healing.
Visual stability is usually achieved within a few weeks, depending on the procedure.
Risks and potential side effects
Laser eye correction is considered very safe; however, potential risks include:
- Dry eyes.
- Glare or halos, particularly at night.
- Under- or over-correction.
- Infection (rare).
Careful patient selection and experienced surgical care help minimise these risks.
Benefits of laser eye correction
For suitable candidates, laser eye surgery offers significant advantages. These include reduced dependence on glasses or contact lenses, greater convenience in daily activities and sport, and long-lasting visual improvement.
Laser eye correction provides an effective and reliable solution for many individuals seeking freedom from corrective lenses. With modern techniques and thorough pre-operative assessment, outcomes are highly predictable and patient satisfaction remains high. A specialist consultation is the first step in determining suitability and achieving optimal results.
