As a general rule of thumb, LASIK can correct prescriptions of:
For patients who fall outside of these ranges, other refractive surgery options may still be available such as PRK, SMILE®, or ICL procedures.
Who is unsuaitbale for LASIK?
Despite having a prescription within the treatable range of LASIK, some patients will still not be suitable for refractive surgery. These are usually patients with eye conditions, such as keratoconus or corneal scarring, that may be exacerbated during the surgical procedures. Other patients who may be best to avoid LASIK are those whose poor vision is due to an underlying eye disease rather than refractive error. Such diseases include eye cataract, macular degeneration, and lazy eye.
We use the most accurate and reliable variation of LASIK surgery to achieve the best results.
A two-step procedure for enhanced accuracy
LASIK eye surgery is a two-step procedure. At Eye Laser Specialists, both steps are laser assisted. This has improved accuracy and reliability compared to another variation of LASIK, which uses a manual bladed instrument for the first stage.
We will anaesthetise your eye with topical eye drops. We can also offer you a mild sedative for additional comfort.
Step 1: We use a femtosecond laser to create a thin flap of corneal tissue in just 15 seconds.
Step 2: We then lift the flap to allow access to the underlying tissue before applying the second laser to the cornea. This is a process known as photoablation. This is where the laser removes selected areas of tissue to reshape the cornea so that light refracting through this tissue will focus perfectly on the retina and form a clear image. Once the excimer laser step is complete, we reposition the flap. The entire process takes about 10 minutes for both eyes.
- Precise and highly accurate
- Painless surgery
- Rapid recovery
- Excellent visual results
- Can treat myopia, hyperopia, astigmatism and mixed astigmatism
- Easy to perform enhancement surgery with LASIK
- Creates a flap which has potential complications such as flap dislodgement; infection and epithelial ingrowth
As with any surgery, there are certain risks.
Some major, but extremely uncommon risks include:
- Loss of best-corrected vision
- Corneal ectasia
- Corneal infection
Minor risks include:
- Dry eye
- Dysphotopsia (night vision difficulties including glare and halos)
- Regression (The need for glasses or further laser correction in the future)
LASIK is an excellent, reliable surgery that has been performed millions of times globally.
However, for those who aren’t suitable, alternative laser vision correction procedures include PRK, SMILE for myopia, and PRK for hyperopia (not recommended).
Alternative lens-based procedures such as ICL and refractive lens exchange are not suitable for corneal laser corrective surgery.
Step 1: Creating the flap
We create a flap using a highly precise femtosecond laser.
Step 2: Relocating the patient
We then move you over to the MEL90 excimer laser.
Step 3: Folding back the flap
We then gently fold the flap back, exposing the inner corneal tissue to be treated.
Step 4: Correcting the error
The MEL90 excimer laser reshapes the corneal tissue correcting the refractive error.
Step 5: Repositioning the flap
The flap is returned to its original position, protecting the eye like a natural bandage.
LASIK surgery using the Zeiss MEL90 laser has a proven track record of excellent visual outcomes:
- 100% within 1 D of planned surgery
- 99% vision 20/25 or better
LASIK has a very low complication rate:
- Loss of 1 line best corrected visual acuity 2.4%(1:50)
- Loss of 2 lines best corrected visual acuity 0.1% (1:1000)