LASIK, TransPRK / PRK, SMILE

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What is Refractive Eye Surgery?

LASIK, TransPRK / PRK, SMILE

Refractive eye surgery refers to a group of procedures that reshape the cornea to reduce the dependence on spectacles or contact lenses. By modifying how light enters the eye, these procedures aim to enhance natural focusing. Refractive surgery may be considered for individuals with myopia (short-sightedness), hyperopia (long-sightedness), or astigmatism. Different techniques are used depending on corneal structure, lifestyle considerations, and overall eye health. While the goal across all methods is similar, each procedure uses a distinct approach to access and reshape the corneal tissue. Early assessment and a thorough examination of the cornea, tear film, and eye health help determine suitability for each option.

Causes of Refractive Errors

Refractive errors occur when the eye’s natural focusing system does not bend light evenly onto the retina. This may result from the length of the eye, the curvature of the cornea, or irregularities in the corneal surface.

Common Contributing Factors

Risks of Refractive Errors

As refractive errors progress, individuals may experience blurred vision, glare, or difficulty seeing at certain distances. Refractive eye surgery aims to address these focusing issues by reshaping the cornea, but suitability varies between individuals and depends on corneal thickness, stability of spectacle power, and overall eye condition. Some people may be advised against certain procedures if the cornea is thin, the tear film is unstable, or other eye conditions are present. A thorough evaluation helps guide which procedure, if any, may be appropriate.

Stages of Refractive Error Progression

Early Stage

Mild difficulty focusing at distance or near

Moderate Stage

Increasing reliance on glasses or contact lenses

Later Stage

Glare, halos, or fluctuating vision depending on refractive type

Stable Stage

Spectacle power stabilises, allowing assessment for surgery

Unsuitable Stage

Corneal or ocular findings that limit eligibility

Symptoms of Refractive Errors

Refractive errors typically present with noticeable focusing difficulties. Symptoms vary with the degree of short-sightedness, long-sightedness, or astigmatism.

Common Symptoms

Types of Refractive Eye Surgery

LASIK (Laser-Assisted In Situ Keratomileusis)

LASIK involves creating a thin corneal flap, reshaping the underlying tissue using a laser, and repositioning the flap. The flap-based approach allows corneal reshaping beneath the surface layer.

Symptoms That May Lead to Evaluation for LASIK

Factors Linked to LASIK Suitability

TransPRK / PRK (Surface-Based Refractive Surgery)

TransPRK and PRK reshape the cornea’s surface without creating a flap. The surface layer is removed, the laser reshapes the exposed tissue, and the layer regenerates over time.

Symptoms That May Lead to Evaluation for PRK/TransPRK

Factors Linked to PRK/TransPRK Suitability

SMILE (Small Incision Lenticule Extraction)

SMILE uses a laser to create a thin lenticule of tissue within the cornea. This lenticule is removed through a small opening, reshaping the cornea without a flap.

Symptoms That May Lead to Evaluation for SMILE

Factors Linked to SMILE Suitability

Understanding Refractive Surgery Tests

Refractive surgery evaluations include detailed assessments of corneal shape, tear stability, thickness, and focusing measurements. These tests help determine suitability and guide the choice of procedure.

Types of Refractive Surgery Tests

Refractive Surgery Treatments & Options

Procedural Options

Here's Why You Should Choose Ascend Eye Clinic

Customised Treatment Plans

Every patient’s condition, lifestyle, and goals are unique — and so should their care. We take the time to listen, understand, and evaluate your needs in detail. From there, we develop a tailored treatment plan that delivers the most ideal outcomes.

Compassionate Patient-Centered Care

For most of us, our vision is our most valued sense. Whether you are a senior, of working age, or the parent of a child who needs help, we will prioritise understanding your case and determining the most suitable treatment to improve or preserve your vision. We welcome complex cases as we care about you, your sight and your future.

Powered By Technology

We harness the power of ophthalmic technology to deliver precise diagnostics, accurate treatments, and faster recovery times. From imaging systems to minimally invasive surgical tools, our investment in technology allows us to provide safe and effective eye care.

Committed to Patient Safety

Your safety is our highest priority. Every diagnosis and treatment we provide is evidence-based to ensure that each step of your care is not only effective but also held to a high standard of safety and quality.

Dedicated Service & Aftercare

For pre-surgery, we will discuss all possible treatment options and recommends the most appropriate one for every patient. For post-surgery, we provide aftercare, including follow-up consultations and treatment plans tailored to every patient to promote optimal recovery.

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