PRK VS LASIK

 

Comparison of Photo-Refractive Keratectomy (PRK) and Lasik

The below chart lays out differences between PRK and Lasik eye surgery. Both surgeries have their advantages and categories below show some of the main differences in the debate of PRK VS LASIK.

 

Issue

PRK

LASIK

Intra-operative pain None None
Post-operative pain Variable (minimal to significant) Mild
Approved for:
Myopia
Hyperopia
Astigmatism
 
<= -12.00
<= +5.00
<= -4.00
            <= -14.00

<= +5.00

<= -5.00

Perform on thin corneas Yes No
Perform on flat corneas Yes No
Perform on deep set eyes Yes No
Perform on “small eyes” Yes No
Do in epithelial dystrophy Yes No
Corneal healing Stable tensile strength Reduced tensile strength
Risk with contact sports No Yes
Intra-op pressure damage No Possible
Retinal/optic nerve stroke No Possible
Induced retinal tears No Possible
Post-op dry eye Occasional Frequent
Visual acuity recovery Slower Faster
Long-term results More predictable Less predictable
Re-op/enhancement rates 1-5% Up to 25-30%
Follow-up Up to 20 years (1989) Most <10 yrs (approval 11/99)
Flap complications None

Buttonholes

“Free cap”

Wrinkles

Interface scarring

Epithelial ingrowth

“Flap melts”

“Sands of Sahara” syndrome

Diffuse lamellar keratitis

Flap may dislodge with trauma