LASIK
A corneal flap is created and underlying tissue is reshaped. Recovery is often relatively quick, but corneal and ocular-surface suitability are essential.
Refractive surgery
LASIK, PRK & implantable collamer lens (ICL)
Refractive surgery begins with candidacy, not a procedure choice. Corneal shape, prescription, eye health, age and visual priorities determine which options are reasonable.
Understanding the concern
A clear diagnosis comes before a treatment plan
LASIK and PRK reshape the cornea, while an implantable collamer lens is placed inside the eye without removing the natural lens. These options are not interchangeable and not everyone is suitable for surgery.
A careful assessment should identify dry eye, unstable prescription, corneal weakness, retinal risk, lens change and expectations that could make surgery inappropriate or alter the recommended approach.
What patients notice
Questions a refractive assessment should answer
These features can overlap with other eye conditions. Examination is needed to establish the cause.
- Is the prescription stable?
- Is the cornea thick and regular enough?
- Is dry eye present and controlled?
- Would a corneal procedure or ICL better fit the prescription?
- Are the retina, lens and eye pressure healthy?
- What glasses might still be needed with age?
Specialist assessment
What the consultation may involve
Screening combines precise measurements with a full medical eye examination. A quick prescription check is not enough.
01
Refraction and stability
The prescription is measured carefully and compared with previous results to assess stability.
02
Corneal mapping and thickness
Topography or tomography and pachymetry evaluate corneal shape, symmetry and tissue available for treatment.
03
Ocular surface and pupil assessment
Dry eye, eyelid health and pupil behaviour can influence comfort and optical symptoms after surgery.
04
Dilated eye examination
The lens and retina are checked, particularly in high myopia where retinal assessment is important.
Treatment planning
Comparing refractive options
The aim is to select a safe, proportionate option with realistic expectations, including the possibility that no surgery is the right recommendation.
PRK
The surface layer is removed before corneal reshaping. It avoids a flap but involves a longer surface-healing period.
ICL
A lens is implanted inside the eye, often considered for selected moderate or high prescriptions or when corneal laser is less suitable.
No surgery or a later lens-based option
Glasses, contact lenses or waiting may be safer when measurements, age-related lens change or expectations make intervention inappropriate.
From first assessment to follow-up
- 01Confirm goals, prescription history and contact-lens use
- 02Complete corneal, ocular-surface and dilated eye testing
- 03Compare suitable options, risks and likely spectacle needs
- 04Repeat key measurements when necessary before final consent
- 05Follow procedure-specific medication and review instructions
Refractive assessment
At a glance
- LASIK, PRK and ICL evaluation
- Corneal shape and ocular-health assessment
- Individualised treatment selection
Choosing the appropriate vision-correction option
Prof. Amer Awan assesses LASIK, PRK and ICL options according to corneal shape, prescription, ocular health, lifestyle and a complete eye examination. The aim is to identify a suitable option rather than favouring one procedure for everyone.
Related surgical video
Managing Myopic Anisometropia with ICL
From Prof. Amer Awan's official YouTube channel. This professional video contains surgical footage.
Questions patients ask
About LASIK, PRK & ICL
Which procedure is best?
There is no universally best procedure. Prescription, corneal structure, dry eye, age, retinal health, occupation and priorities determine which options are reasonable.
Can refractive surgery guarantee 20/20 vision?
No. Residual prescription, dry eye, healing variation and other eye conditions can affect the result. Enhancement or glasses may still be needed.
Will I never need reading glasses?
Refractive surgery does not stop age-related loss of near focus. The likely need for reading correction should be part of preoperative planning.
Why must contact lenses be stopped before testing?
Contact lenses can temporarily alter corneal shape. The required break depends on lens type and should be confirmed when booking assessment.
Continue reading
Related eye-care pathways
Cataract & lens surgeryUnderstand lens-based planning when cataract is present.Retina specialistWhy high myopia may warrant careful retinal examination.Book an assessmentPrepare for a comprehensive refractive consultation.
General information sources: Prof. Amer Awan - current public profile.